diff --git a/src/main.c b/src/main.c
index 8c3afd74d..69aa5a8d6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1181,9 +1181,10 @@ int main(int argc, char *argv[])
 	pixel *vid_buf=calloc((XRES+BARSIZE)*(YRES+MENUSIZE), PIXELSIZE);
 	pixel *pers_bg=calloc((XRES+BARSIZE)*YRES, PIXELSIZE);
 	void *http_ver_check;
-	char *ver_data=NULL, *tmp;
+	void *http_session_check;
+	char *ver_data=NULL, *check_data=NULL, *tmp;
 	char console_error[255] = "";
-	int i, j, bq, fire_fc=0, do_check=0, old_version=0, http_ret=0, major, minor, old_ver_len;
+	int i, j, bq, fire_fc=0, do_check=0, do_s_check=0, old_version=0, http_ret=0,http_s_ret=0, major, minor, old_ver_len;
 #ifdef INTERNAL
 	int vs = 0;
 #endif
@@ -1285,6 +1286,10 @@ int main(int argc, char *argv[])
 #else
 	http_ver_check = http_async_req_start(NULL, "http://" SERVER "/Update.api?Action=CheckVersion", NULL, 0, 0);
 #endif
+	if(svf_login){
+		http_session_check = http_async_req_start(NULL, "http://" SERVER "/Login.api?Action=CheckSession", NULL, 0, 0);
+		http_auth_headers(http_session_check, svf_user_id, NULL, svf_session_id);
+	}
 
 	while (!sdl_poll())
 	{
@@ -1367,6 +1372,74 @@ int main(int argc, char *argv[])
 			}
 			do_check = (do_check+1) & 15;
 		}
+		if(http_session_check)
+		{
+			if(!do_s_check && http_async_req_status(http_session_check))
+			{
+				check_data = http_async_req_stop(http_session_check, &http_s_ret, NULL);
+				if(http_ret==200 && check_data)
+				{
+					printf("{%s}\n", check_data);
+					if(!strncmp(check_data, "EXPIRED", 7))
+					{
+						//Session expired
+						strcpy(svf_user, "");
+						strcpy(svf_pass, "");
+						strcpy(svf_user_id, "");
+						strcpy(svf_session_id, "");
+						svf_login = 0;
+						svf_own = 0;
+						svf_admin = 0;
+						svf_mod = 0;
+					}
+					else if(!strncmp(check_data, "BANNED", 6))
+					{
+						//User banned
+						strcpy(svf_user, "");
+						strcpy(svf_pass, "");
+						strcpy(svf_user_id, "");
+						strcpy(svf_session_id, "");
+						svf_login = 0;
+						svf_own = 0;
+						svf_admin = 0;
+						svf_mod = 0;
+					}
+					else if(!strncmp(check_data, "OK", 2))
+					{
+						//Session valid
+						if(strlen(check_data)>2){
+							//User is elevated
+							if (!strncmp(check_data+3, "ADMIN", 5))
+							{
+								svf_admin = 1;
+								svf_mod = 0;
+							}
+							else if (!strncmp(check_data+3, "MOD", 3))
+							{
+								svf_admin = 0;
+								svf_mod = 1;
+							}							
+						}	
+						save_presets(0);
+					}
+					else
+					{
+						//No idea, but log the user out anyway
+						strcpy(svf_user, "");
+						strcpy(svf_pass, "");
+						strcpy(svf_user_id, "");
+						strcpy(svf_session_id, "");
+						svf_login = 0;
+						svf_own = 0;
+						svf_admin = 0;
+						svf_mod = 0;
+					}
+					free(check_data);
+				}
+				http_session_check = NULL;
+			}
+			do_s_check = (do_s_check+1) & 15;
+		}
 
 		if (sdl_key=='q' || sdl_key==SDLK_ESCAPE)
 		{
diff --git a/src/misc.c b/src/misc.c
index 702ff0378..c98c5a3c0 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -92,7 +92,7 @@ void strlist_free(struct strlist **list)
 void save_presets(int do_update)
 {
 	FILE *f=fopen("powder.def", "wb");
-	unsigned char sig[4] = {0x50, 0x44, 0x65, 0x66};
+	unsigned char sig[4] = {0x50, 0x44, 0x65, 0x67};
 	unsigned char tmp = sdl_scale;
 	if (!f)
 		return;
@@ -136,7 +136,7 @@ void load_presets(void)
 	if (!f)
 		return;
 	fread(sig, 1, 4, f);
-	if (sig[0]!=0x50 || sig[1]!=0x44 || sig[2]!=0x65 || sig[3]!=0x66)
+	if (sig[0]!=0x50 || sig[1]!=0x44 || sig[2]!=0x65)
 	{
 		if (sig[0]==0x4D && sig[1]==0x6F && sig[2]==0x46 && sig[3]==0x6F)
 		{
@@ -158,15 +158,20 @@ void load_presets(void)
 		remove("powder.def");
 		return;
 	}
-	if (load_string(f, svf_user, 63))
-		goto fail;
-	//if (load_string(f, svf_pass, 63))
-	//goto fail;
-	if (load_string(f, svf_user_id, 63))
-		goto fail;
-	if (load_string(f, svf_session_id, 63))
-		goto fail;
-	svf_login = !!svf_user[0];
+	if(sig[3]==0x66){
+		if (load_string(f, svf_user, 63))
+			goto fail;
+		if (load_string(f, svf_pass, 63))
+			goto fail;
+	} else {
+		if (load_string(f, svf_user, 63))
+			goto fail;
+		if (load_string(f, svf_user_id, 63))
+			goto fail;
+		if (load_string(f, svf_session_id, 63))
+			goto fail;
+	}
+	svf_login = !!svf_session_id[0];
 	if (fread(&tmp, 1, 1, f) != 1)
 		goto fail;
 	sdl_scale = (tmp == 2) ? 2 : 1;