Recently we have been having some serious issues with Visual Studio 2005. It basically rendered my team completely unproductive.

If you are encountering any of these errors then there is good news! - Yep, there is a hot-fix.
The bad news is that Microsoft has not yet made it publicly available and you have to call them to get it. (I was asked not to post it, so I won't).

When you do call Microsoft, be sure to mention KB Article Number(s): 915038. They'll fix you up right away.

You will get an email with a donwload link, here is an excerpt of the email:
"WARNING: This fix is not publicly available through the Microsoft website as it has not gone through full Microsoft regression testing. If you would like confirmation that this fix is designed to address your specific problem, or if you would like to confirm whether there are any special compatibility or installation issues associated with this fix, you are encouraged to speak to a Support Professional in Product Support Services."

So far everything is running smoothly, so chances are it will fix your issue too!