So I finally got some time to migrate to the free TeamCity Professional (actually, I did this like three weeks ago but never blogged about it :-) ), and I'm loving it. Installation and configuration are a breeze, and the comet-y UI always tells you the current status. There's a ton of features I have yet to discover, but one thing I did try and really liked is jabber notifications. We have a private jabber server at work, so I created an account for TeamCity, and now it IMs me when the build fails. Plus, I get a RSS feed of all the builds.