Visual Studio 2005 SP1: Unable to detach from one or more processes

I’ve just updated VS 2005 to SP1. I am using WAP project with DevServer and enabled “Edit and Continue”. My common procedure is to start debugging session, do the changes in the code if required, and if the code is blocked by VS(very annoying, but MS doesn’t want to fix it) ,I detaching the debugger from the project. In SP1 it started to show error:
Unable to detach from one or more processes. Operation not supported. Unknown error: 0x80131c32.
It is not always reproducible, but happened a few times during the day. There is similar, but probably unrelated, report in MS feedback.
The workaround is to stop process instead of detaching.