VS.NET 2003 SP1 Beta
I'd recently enrolled on the VS.NET 2003 SP1 beta and consequently installed it on my development VM machine at home, after using it "in anger" it seems stable enough. I didn't experience any crashes or other weirdness and it has fixed one of the most annoying issues i've had with the environment.
When opening a solution and performing a VSS get latest, sometimes certain assemblies get locked and cannot be overwritten via build or rebuild unless you first close the IDE and reopen the solution. Hella annoying and always seemed to happen at exactly the wrong time.