diff --git a/pyweb/mumble/models.py b/pyweb/mumble/models.py
index e0fd2e8..7a55a25 100644
--- a/pyweb/mumble/models.py
+++ b/pyweb/mumble/models.py
@@ -271,8 +271,13 @@ class MumbleUser( models.Model ):
 		# Unregister this player in Murmur via dbus.
 		murmur = self.server.getDbusObject();
 		murmur.unregisterPlayer( dbus.Int32( self.mumbleid ) );
-
-
+	
+	def __setattr__( self, name, value ):
+		if name == 'server':
+			if self.id is not None and self.server != value:
+				raise AttributeError( "This field must not be updated once the Record has been saved." );
+		
+		models.Model.__setattr__( self, name, value );
 
 
 from django.db.models import signals
diff --git a/pyweb/mumble/urls.py b/pyweb/mumble/urls.py
index d18fb4e..632db00 100644
--- a/pyweb/mumble/urls.py
+++ b/pyweb/mumble/urls.py
@@ -18,7 +18,7 @@ from django.conf.urls.defaults import *
 
 urlpatterns = patterns(
 	'mumble.views',
-	( r'(?P<server>\d+)/texture.jpg',	'showTexture' ),
-	( r'(?P<server>\d+)',		'show' ),
-	( r'$',				'mumbles' ),
+	( r'(?P<server>\d+)/texture.jpg',	'showTexture'	),
+	( r'(?P<server>\d+)',			'show'		),
+	( r'$',					'mumbles'	),
 )
diff --git a/template/mumble/mumble.htm b/template/mumble/mumble.htm
index 9c3c7c2..90dec4d 100644
--- a/template/mumble/mumble.htm
+++ b/template/mumble/mumble.htm
@@ -44,6 +44,8 @@
 	    You can upload an image that you would like to use as your user texture here.<br />
 	    Your current texture is:<br />
 	    <img src="/mumble/{{DBaseObject.id}}/texture.jpg" alt="user texture" /><br />
+		Hint: The texture image <b>needs</b> to be 600x60 in size. If you upload an image with
+		a different size, it will be resized accordingly.<br />
 	  </p>
 	  <form action="" method="post" enctype="multipart/form-data">
 	    <table>