Looks like you can submit bugs directly to ESRI rather than post them in the forums. When you login to the Beta site and go the the ArcGIS 9.2 beta, you’ll see a search dialog and a submit bug link. I tried to search for some topics, but nothing came up so I guess it isn’t live yet.
We’ve all been asking for a bug tracker for years and now it seems like we have access to one. Very cool!