Question: I've noticed since installing Visual Studio 2010 SP1 that I'm having huge performance issues. It will randomly freeze up on me quite a bit.

I had no performance issues with Visual Studio 2010 before the upgrade. The only add-on I have running is ReSharper.

I'm wondering if anyone else is experiencing performance issues? If so have you found a way to fix them?

Answer: 
Just a small heads up about SP1: 

* If you have SQL Server Management Studio installed on the same machine, **don't** install SP1 just yet. You will lose all intellisense functionality. This is a major bug that must of slipped through.

In terms of performance, I haven't really noticed much of a difference.
So it seems like disabling the Productivity Power Tools is the key to solve this problem, at least to help with slowness. At least it worked out for me. Thanks Mark for your question/answer :)