For the past few weeks, I've been having a lot of problems with VS2008 crashing randomly on my PC. I've been installing a lot of tools and components lately, so I have little doubt that something I've installed recently was causing it to BSOD (Black Screen of Death in this case).
This morning, I was trying to add the Microsoft.IdentityModel.dll to my tool box, and it kept crashing. I finally had enough, and decided to Google for a solution. The link below fixed the problem on the first try. Yes!
Sometimes it pays to spend 2 minutes fixing the problem instead of just ignoring it and hoping it will go away.