diff --git a/coreapi/sipwizard.c b/coreapi/sipwizard.c
index 0bd654471d8c93c78cfe1400437a1c69b9a2dae5..ee268e50cec7f2b78dca286157f619e40eb1fcce 100644
--- a/coreapi/sipwizard.c
+++ b/coreapi/sipwizard.c
@@ -1,6 +1,6 @@
 /*
-linphone
-Copyright (C) 2011  Simon MORLAT (simon.morlat@linphone.org)
+sipwizard.c
+Copyright (C) 2011 Belledonne Communication, Grenoble, France
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
@@ -30,9 +30,9 @@ typedef struct _BLReq{
 	ortp_thread_t th;
 }BLReq;
 
-const int XMLRPC_FAILED = -1;
-const int XMLRPC_OK = 0;
-const char *XMLRPC_URL = "https://www.linphone.org/wizard.php";
+static const int XMLRPC_FAILED = -1;
+static const int XMLRPC_OK = 0;
+static const char *XMLRPC_URL = "https://www.linphone.org/wizard.php";
 
 static void sip_wizard_init_instance(SipSetupContext *ctx){
 	LinphoneProxyConfig *cfg=sip_setup_context_get_proxy_config(ctx);
@@ -40,65 +40,12 @@ static void sip_wizard_init_instance(SipSetupContext *ctx){
 	linphone_proxy_config_enable_register(cfg,FALSE);
 }
 
-const char ** sip_wizard_get_domains(SipSetupContext *ctx) {
+static const char ** sip_wizard_get_domains(SipSetupContext *ctx) {
 	LinphoneProxyConfig *cfg=sip_setup_context_get_proxy_config(ctx);
 	const char **domains = (const char**) &cfg->reg_proxy;
 	return domains;
 }
 
-static SoupMessage * build_xmlrpc_check_account_request(const char *identity){
-	SoupMessage * msg;
-
-	msg=soup_xmlrpc_request_new(XMLRPC_URL,
-				"check_account",
-				G_TYPE_STRING, identity,
-				G_TYPE_INVALID);
-	if (!msg){
-		ms_error("Fail to create SoupMessage !");
-	}else{
-		SoupBuffer *sb=soup_message_body_flatten(msg->request_body);
-		ms_message("This is the XML-RPC request we are going to send:\n%s\n",sb->data);
-		soup_buffer_free(sb);
-	}
-	return msg;
-}
-
-static SoupMessage * build_xmlrpc_check_account_validated(const char *identity){
-	SoupMessage * msg;
-
-	msg=soup_xmlrpc_request_new(XMLRPC_URL,
-				"check_account_validated",
-				G_TYPE_STRING, identity,
-				G_TYPE_INVALID);
-	if (!msg){
-		ms_error("Fail to create SoupMessage !");
-	}else{
-		SoupBuffer *sb=soup_message_body_flatten(msg->request_body);
-		ms_message("This is the XML-RPC request we are going to send:\n%s\n",sb->data);
-		soup_buffer_free(sb);
-	}
-	return msg;
-}
-
-static SoupMessage * build_xmlrpc_create_account_request(const char *identity, const char *passwd, const char *email, int suscribe){
-	SoupMessage * msg;
-
-	msg=soup_xmlrpc_request_new(XMLRPC_URL,
-				"create_account",
-				G_TYPE_STRING, identity,
-				G_TYPE_STRING, passwd,
-				G_TYPE_STRING, email,
-				G_TYPE_INT, suscribe,
-				G_TYPE_INVALID);
-	if (!msg){
-		ms_error("Fail to create SoupMessage !");
-	}else{
-		SoupBuffer *sb=soup_message_body_flatten(msg->request_body);
-		ms_message("This is the XML-RPC request we are going to send:\n%s\n",sb->data);
-		soup_buffer_free(sb);
-	}
-	return msg;
-}
 
 static int xml_rpc_parse_response(BLReq *blreq, SoupMessage *sm){
 	SoupBuffer *sb;
@@ -149,7 +96,6 @@ static void * process_xml_rpc_request(void *up){
 #endif
 	code=soup_session_send_message(blreq->session,sm);
 	if (code==200){
-		ms_message("Got a response from server, yeah !");
 		xml_rpc_parse_response(blreq,sm);
 	}else{
 		ms_error("request failed, error-code=%i (%s)",code,soup_status_get_phrase(code));
@@ -161,72 +107,78 @@ static void * process_xml_rpc_request(void *up){
 	return NULL;
 }
 
-int sip_wizard_account_exists(SipSetupContext *ctx, const char *uri) {
-	/*
-	 * Return 1 if account already exists
-	 * 0 if account doesn't exists
-	 * -1 if information isn't available
-	 */
-	SoupMessage *sm;
-	BLReq *req=ms_new0(BLReq, 1);
-	req->session=soup_session_sync_new();
-	sm=build_xmlrpc_check_account_request(uri);
-	req->msg=sm;
-	process_xml_rpc_request(req);
-
-	if (req->status == XMLRPC_OK) {
-		return req->result;
-	} else {
+
+static int do_simple_xmlrpc_request(SoupMessage *msg) {
+        int ret=-1;
+        BLReq *req;
+
+	if (!msg){
+		ms_error("Fail to create SoupMessage !");
 		return -1;
+	}else{
+		SoupBuffer *sb=soup_message_body_flatten(msg->request_body);
+		ms_message("This is the XML-RPC request we are going to send:\n%s\n",sb->data);
+		soup_buffer_free(sb);
 	}
+
+	req=ms_new0(BLReq, 1);
+        req->session=soup_session_sync_new();
+        req->msg=msg;
+
+        process_xml_rpc_request(req);
+
+        if (req->status == XMLRPC_OK) {
+                ret=req->result;
+        }
+
+	// Freeing allocated structures lead to a crash (why?)
+	//g_free(req->session);
+	//g_free(msg);
+        ms_free(req);
+
+        return ret;
 }
 
-int sip_wizard_account_validated(SipSetupContext *ctx, const char *uri) {
-	/*
-	 * Return 1 if account already exists
-	 * 0 if account doesn't exists
-	 * -1 if information isn't available
-	 */
-	SoupMessage *sm;
-	BLReq *req=ms_new0(BLReq, 1);
-	req->session=soup_session_sync_new();
-	sm=build_xmlrpc_check_account_validated(uri);
-	req->msg=sm;
-	process_xml_rpc_request(req);
-
-	if (req->status == XMLRPC_OK) {
-		return req->result;
-	} else {
-		return -1;
-	}
+/*
+ * Return 1 if account already exists
+ * 0 if account doesn't exists
+ * -1 if information isn't available
+ */
+static int sip_wizard_account_exists(SipSetupContext *ctx, const char *identity) {
+	SoupMessage *msg=soup_xmlrpc_request_new(XMLRPC_URL,
+                                "check_account",
+                                G_TYPE_STRING, identity,
+                                G_TYPE_INVALID);
+	return do_simple_xmlrpc_request(msg);
 }
 
-int sip_wizard_create_account(SipSetupContext *ctx, const char *uri, const char *passwd, const char *email, int suscribe) {
-	/*
-	 * Return 0 if account successfully created
-	 * Else return -1
-	 */
-	SoupMessage *sm;
-	BLReq *req=ms_new0(BLReq, 1);
-	req->session=soup_session_sync_new();
-	sm=build_xmlrpc_create_account_request(uri, passwd, email, suscribe);
-	req->msg=sm;
-	process_xml_rpc_request(req);
-
-	if (req->status == XMLRPC_OK) {
-		return req->result;
-	} else {
-		return -1;
-	}
+static int sip_wizard_account_validated(SipSetupContext *ctx, const char *identity) {
+	SoupMessage *msg=soup_xmlrpc_request_new(XMLRPC_URL,
+                                "check_account_validated",
+                                G_TYPE_STRING, identity,
+                                G_TYPE_INVALID);
+        return do_simple_xmlrpc_request(msg);
+}
+
+static int sip_wizard_create_account(SipSetupContext *ctx, const char *identity, const char *passwd, const char *email, int suscribe) {
+	SoupMessage *msg=soup_xmlrpc_request_new(XMLRPC_URL,
+				"create_account",
+				G_TYPE_STRING, identity,
+				G_TYPE_STRING, passwd,
+				G_TYPE_STRING, email,
+				G_TYPE_INT, suscribe,
+				G_TYPE_INVALID);
+	return do_simple_xmlrpc_request(msg);
 }
 
 static void guess_display_name(LinphoneAddress *from){
-	char *dn=(char*)ms_malloc(strlen(linphone_address_get_username(from))+3);
+	const char *username=linphone_address_get_username(from);
+	char *dn=(char*)ms_malloc(strlen(username)+1);
 	const char *it;
 	char *wptr=dn;
 	bool_t begin=TRUE;
-	bool_t surname=0;
-	for(it=linphone_address_get_username(from);*it!='\0';++it){
+	bool_t surname=FALSE;
+	for(it=username;*it!='\0';++it){
 		if (begin){
 			*wptr=toupper(*it);
 			begin=FALSE;
@@ -235,9 +187,12 @@ static void guess_display_name(LinphoneAddress *from){
 			*wptr=' ';
 			begin=TRUE;
 			surname=TRUE;
-		}else *wptr=*it;
+		}else {
+			*wptr=*it;
+		}
 		wptr++;
 	}
+	*wptr='\0';
 	linphone_address_set_display_name(from,dn);
 	ms_free(dn);
 }
diff --git a/gtk/setupwizard.c b/gtk/setupwizard.c
index 7f22af3881300c75fadcb1df9ebd7e6a0ea5ced7..b03b1be2d28cb6b75c0ff844aee55ec865ac920f 100644
--- a/gtk/setupwizard.c
+++ b/gtk/setupwizard.c
@@ -20,16 +20,16 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "linphone.h"
 #include <glib.h>
 #include <glib/gprintf.h>
-LinphoneAccountCreator *linphone_gtk_assistant_get_creator(GtkWidget*w);
+static LinphoneAccountCreator *linphone_gtk_assistant_get_creator(GtkWidget*w);
 
-const int PASSWORD_MIN_SIZE = 6;
-const int LOGIN_MIN_SIZE = 4;
-int is_username_available = 0;
-int is_email_correct = 0;
-int is_password_correct = 0;
+static const int PASSWORD_MIN_SIZE = 6;
+static const int LOGIN_MIN_SIZE = 4;
+static int is_username_available = 0;
+static int is_email_correct = 0;
+static int is_password_correct = 0;
 
-GdkPixbuf *ok;
-GdkPixbuf *notok;
+static GdkPixbuf *ok;
+static GdkPixbuf *notok;
 
 static GtkWidget *create_intro(){
 	GtkWidget *vbox=gtk_vbox_new(FALSE,2);
@@ -75,7 +75,7 @@ static void account_informations_changed(GtkEntry *entry, GtkWidget *w) {
 
 	const gchar *needle = "@";
 	if (entry == username && g_strrstr(gtk_entry_get_text(username), needle) != NULL) {
-		gtk_entry_set_text(domain, g_strrstr(gtk_entry_get_text(username), "@")+1);
+		gtk_entry_set_text(domain, g_strrstr(gtk_entry_get_text(username), needle)+1);
 	}
 
 	gtk_assistant_set_page_complete(GTK_ASSISTANT(assistant),w,
@@ -92,7 +92,7 @@ static void linphone_account_informations_changed(GtkEntry *entry, GtkWidget *w)
 
 static GtkWidget *create_linphone_account_informations_page() {
 	GtkWidget *vbox=gtk_table_new(3, 2, TRUE);
-	GtkWidget *label=gtk_label_new(_("Enter your linphone.org's username"));
+	GtkWidget *label=gtk_label_new(_("Enter your linphone.org username"));
 
 	GdkColor color;
 	gdk_color_parse ("red", &color);
@@ -129,12 +129,12 @@ static GtkWidget *create_account_informations_page() {
 	gtk_widget_modify_fg(labelEmpty, GTK_STATE_NORMAL, &color);
 
 	GtkWidget *labelUsername=gtk_label_new(_("Identity:"));
-	GtkWidget *labelUsernameExemple=gtk_label_new(_("exemple: user@sip.linphone.org"));
+	GtkWidget *labelUsernameExemple=gtk_label_new(_("example: user@sip.linphone.org"));
 	GtkWidget *labelPassword=gtk_label_new(_("Password:"));
 	GtkWidget *entryPassword=gtk_entry_new();
 	gtk_entry_set_visibility(GTK_ENTRY(entryPassword), FALSE);
 	GtkWidget *labelDomain=gtk_label_new(_("Proxy:"));
-	GtkWidget *labelDomainExemple=gtk_label_new(_("exemple: sip.linphone.org"));
+	GtkWidget *labelDomainExemple=gtk_label_new(_("example: sip.linphone.org"));
 	GtkWidget *labelRoute=gtk_label_new(_("Route (optional):"));
 	GtkWidget *entryUsername=gtk_entry_new();
 	GtkWidget *entryDomain=gtk_entry_new();
@@ -179,7 +179,7 @@ static int create_account(GtkWidget *page) {
 	if (res) {
 		if (!g_regex_match_simple("^sip:[a-zA-Z]+[a-zA-Z0-9.\\-_]{2,}@sip.linphone.org$",creator->username, 0, 0)) {
 			gchar identity[128];
-			g_sprintf(identity, "sip:%s@sip.linphone.org", creator->username);
+			g_snprintf(identity, sizeof(identity), "sip:%s@sip.linphone.org", creator->username);
 			linphone_account_creator_set_username(creator, identity);
 			linphone_account_creator_set_domain(creator, "sip:sip.linphone.org");
 		}
@@ -354,7 +354,7 @@ static GtkWidget *wait_for_activation() {
 	return vbox;
 }
 
-int is_account_validated(GtkWidget *page) {
+static int is_account_validated(GtkWidget *page) {
 	LinphoneAccountCreator *creator=linphone_gtk_assistant_get_creator(gtk_widget_get_toplevel(page));
 	return linphone_account_creator_test_validation(creator);
 }
@@ -383,8 +383,9 @@ static void linphone_gtk_assistant_prepare(GtkWidget *assistant, GtkWidget *page
 		const gchar *needle = "@";
 		username = g_strndup(username, (g_strrstr(username, needle) - username));
 		gchar domain[128];
-		g_sprintf(domain, "\"%s\"", creator->domain + 4);
+		g_snprintf(domain, sizeof(domain), "\"%s\"", creator->domain + 4);
 		LinphoneAuthInfo *info=linphone_auth_info_new(username, username, creator->password, NULL, domain);
+		g_free(username);
 		linphone_core_add_auth_info(linphone_gtk_get_core(),info);
 
 		if (linphone_core_add_proxy_config(linphone_gtk_get_core(),cfg)==-1)
@@ -417,7 +418,7 @@ static int linphone_gtk_assistant_forward(int curpage, gpointer data){
 		LinphoneAccountCreator *c=linphone_gtk_assistant_get_creator(w);
 		if (!g_regex_match_simple("^sip:[a-z0-9]+([_\\.-][a-z0-9]+)*@([a-z0-9]+([\\.-][a-z0-9]+)*)+\\.[a-z]{2,}$", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"username"))), 0, 0)) {
 			gchar identity[128];
-			g_sprintf(identity, "sip:%s", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"username"))));
+			g_snprintf(identity, sizeof(identity), "sip:%s", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"username"))));
 			linphone_account_creator_set_username(c, identity);
 		} else {
 			linphone_account_creator_set_username(c, gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"username"))));
@@ -425,7 +426,7 @@ static int linphone_gtk_assistant_forward(int curpage, gpointer data){
 
 		if (!g_regex_match_simple("^sip:([a-z0-9]+([\\.-][a-z0-9]+)*)+\\.[a-z]{2,}$", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"domain"))), 0, 0)) {
 			gchar proxy[128];
-			g_sprintf(proxy, "sip:%s", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"domain"))));
+			g_snprintf(proxy, sizeof(proxy), "sip:%s", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"domain"))));
 			linphone_account_creator_set_domain(c, proxy);
 		} else {
 			linphone_account_creator_set_domain(c, gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"domain"))));
@@ -437,7 +438,7 @@ static int linphone_gtk_assistant_forward(int curpage, gpointer data){
 	else if (curpage == 3) { // Linphone Account's informations entered
 		LinphoneAccountCreator *c=linphone_gtk_assistant_get_creator(w);
 		gchar identity[128];
-		g_sprintf(identity, "sip:%s@sip.linphone.org", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"username"))));
+		g_snprintf(identity, sizeof(identity), "sip:%s@sip.linphone.org", gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"username"))));
 		linphone_account_creator_set_username(c, identity);
 		linphone_account_creator_set_domain(c, "sip:sip.linphone.org");
 		linphone_account_creator_set_password(c,gtk_entry_get_text(GTK_ENTRY(g_object_get_data(G_OBJECT(box),"password"))));
@@ -482,7 +483,7 @@ static LinphoneAccountCreator * linphone_gtk_assistant_init(GtkWidget *w){
 	return NULL;
 }
 
-LinphoneAccountCreator *linphone_gtk_assistant_get_creator(GtkWidget*w){
+static LinphoneAccountCreator *linphone_gtk_assistant_get_creator(GtkWidget*w){
 	return (LinphoneAccountCreator*)g_object_get_data(G_OBJECT(w),"creator");
 }