I have installed VS2010 SP1 on my home development PC and No Abnormalities were detected.

I downloaded the ISO image of the service pack and mounted it using Virtual Clone Drive - download page at http://www.slysoft.com/en/virtual-clonedrive.html.  It is unwise to install VS2010 like this and instead you need to copy all the file to a temporary directory on your hard disk, however it worked with the service pack image mounted as a virtual DVD!

So far I have sucessfully recompiled 2 solutions - more about that later.