It looks as though Microsoft did in fact release the Visual Studio 2005 Service Pack 1 yesterday.  It's a hefty download (approx 432 MB), but I hope it's worth it.  I imagine it would take a lot to fix many of the 'house-of-cards' issues that VS 2005 has.

Be forewarned, however.  I can't recommend running it on Vista yet.  Within the download instructions it clearly states that 1) the installation on Vista will take a long time (up to an hour just to verify digital signatures) and 2) there's an additional update to SP1 for Vista that is currently in Beta.

Enjoy :)