Index: /CKEditor/branches/prototype/_source/core/env.js
===================================================================
--- /CKEditor/branches/prototype/_source/core/env.js	(revision 2340)
+++ /CKEditor/branches/prototype/_source/core/env.js	(revision 2341)
@@ -111,5 +111,5 @@
 			if ( env.gecko )
 			{
-				var geckoRelease = agent.match( /rv:((?:\d|\.)+)/ );
+				var geckoRelease = agent.match( /rv:([\d\.]+)/ );
 				if ( !geckoRelease )
 					return false;