We've been using Visual Studio 2005 Professional on my current project, along with Resharper 2.0. This combination has been the cause of countless issues along the way. One machine has been subjected to every build of Resharper 2.0 since 213.

Each build seems to have its good and bad points, but all come up short. My biggest gripe is that Alt+Enter functionality is missing. Well, that's not exactly true. One or two of our machines, at various stages, have managed to get Alt+Enter functionality.

I'm eagerly awaiting the build of Resharper 2.0 that gives me back the environment enhancements I've come to rely upon in Visual Studio 2003.

Update
Turns out that the issues we were having were due to a bad Ghost Image for our Windows XP machines. Once we went through the process of reloading software from DVDs, all was well in ReSharper land.