Index: ps/trunk/binaries/data/mods/public/gui/lobby/prelobby.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/lobby/prelobby.js
+++ ps/trunk/binaries/data/mods/public/gui/lobby/prelobby.js
@@ -162,7 +162,8 @@
 		case "error":
 		case "disconnected":
 		{
-			Engine.GetGUIObjectByName("feedback").caption = message.text;
+			Engine.GetGUIObjectByName("feedback").caption = message.text ||
+				translate("Unknown error. This usually occurs because the same IP address is not allowed to register more than one account within one hour.");
 			g_DisplayingSystemMessage = true;
 			Engine.StopXmppClient();
 			break;
Index: ps/trunk/binaries/data/mods/public/gui/lobby/prelobby.xml
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/lobby/prelobby.xml
+++ ps/trunk/binaries/data/mods/public/gui/lobby/prelobby.xml
@@ -8,7 +8,7 @@
 	<!-- Add a translucent black background to fade out the menu page -->
 	<object type="image" z="0" sprite="ModernFade"/>
 
-	<object name="dialog" type="image" style="ModernDialog" size="50%-230 50%-120 50%+230 50%+120">
+	<object name="dialog" type="image" style="ModernDialog" size="50%-230 50%-130 50%+230 50%+130">
 
 		<action on="Tick">
 			onTick();
@@ -92,7 +92,7 @@
 			</object>
 
 		</object>
-		<object name="feedback" type="text" size="50 100%-90 100%-50 100%-50" style="ModernLabelText" textcolor="red" text_align="center"/>
+		<object name="feedback" type="text" size="50 100%-110 100%-50 100%-50" style="ModernLabelText" textcolor="red" text_align="center"/>
 		<object name="cancel" type="button" size="18 100%-45 50%-5 100%-17" style="ModernButtonRed" hotkey="cancel">
 			<translatableAttribute id="caption">Cancel</translatableAttribute>
 			<action on="Press">
Index: ps/trunk/source/lobby/XmppClient.cpp
===================================================================
--- ps/trunk/source/lobby/XmppClient.cpp
+++ ps/trunk/source/lobby/XmppClient.cpp
@@ -1094,7 +1094,7 @@
 	DEBUG_CASE(RegistrationUnexpectedRequest, "This client is unregistered with the server");
 	DEBUG_CASE(RegistrationNotAllowed, "Server does not permit password changes");
 	default:
-		return g_L10n.Translate("Unknown error");
+		return "";
 	}
 #undef DEBUG_CASE
 #undef CASE