Well, thanks for the good news :)

My impression is that there's something that doesn't get cleaned up properly in the IDE because once you start seeing these errors is all downhill, but not always -- you may as well restart. The worst part is that you lose the trust. Is it me or the IDE? Here starts another witch hunt which completely distracts from what you were doing. Something that should have taken a second or two ends up taking minutes.

I really wish they would decouple the designer from the aspx editing. From some of the links you posted it gives me the impression that is somewhat tied to the designer; which I believe is true since sometimes switching to design view fixes the problem. There's no UI feedback telling me that the designer or something else is working. It should be a blocking operation; I'd prefer something like "please wait, updating the designer file" rather than me trying to guess when it's doing it and waiting or it may break. Arrr, so fragile; this needs to be fixed somehow.

Thanks.