Index: /FCKeditor.Net/trunk/AssemblyInfo.cs
===================================================================
--- /FCKeditor.Net/trunk/AssemblyInfo.cs	(revision 7666)
+++ /FCKeditor.Net/trunk/AssemblyInfo.cs	(revision 7667)
@@ -55,5 +55,5 @@
 // by using the '*' as shown below:
 
-[assembly: AssemblyVersion("2.6.7.*")]
+[assembly: AssemblyVersion("2.6.9.*")]
 
 //
Index: /FCKeditor.Net/trunk/FCKeditor.cs
===================================================================
--- /FCKeditor.Net/trunk/FCKeditor.cs	(revision 7666)
+++ /FCKeditor.Net/trunk/FCKeditor.cs	(revision 7667)
@@ -495,5 +495,11 @@
 			{
 				Match oMatch = Regex.Match( request.UserAgent, @"(?<=Gecko/)\d{8}" );
-				return ( oMatch.Success && int.Parse( oMatch.Value, CultureInfo.InvariantCulture ) >= 20030210 );
+				if ( oMatch.Success )
+				{
+					return ( int.Parse( oMatch.Value, CultureInfo.InvariantCulture ) >= 20030210 );
+				}
+				// Introduced in Firefox 17.0
+				oMatch = Regex.Match( request.UserAgent, @"(?<=Gecko/)\d+\.\d+" );
+				return oMatch.Success;
 			}