The Microsoft Connected Information Security Group (CIGS) has released an updated build of the CAT.NET tool.

There are some bug fixes and the ability to export results to Excel included in this release and users are advised to upgrade:

http://bit.ly/bV8Lh

Note that this is the 32-bit version. 

Two new discussion forums have been announced by the CIGS team.

CAT.NET:

http://social.msdn.microsoft.com/Forums/en-US/catnet/threads/

Anti-XSS:

http://www.codeplex.com/AntiXSS/Thread/List.aspx