It started happening to me with build 222, and continues in build 223.
I close Visual Studio, and after it disapears, a few seconds go by, and I
get a "Error Report" dialog saying basically an exception occurred and I
should click okay to send a report to Microsoft.
If I just open VS2005 and close it, this does not happen. I have to open a
solution and have Resharper active. I don't have to do much at all to get
the problem to happen. In fact, since installing 222 (and now 223) I can
think of only twice that I was able to close down Visual Studio without
getting the error dialog.
This did not happen to me in builds prior to 222.
I'm not sure how to get more data for you to look at in order to determine
what the problem is. By the time the problem is reported, I assume it's too
late to try and attach a debugger...