One of the biggest features of the new version of Lion - 10.7.2, the bug that caused the App Store to be extremely slow is now gone!
To anyone who hasn't witnessed it, the App Store was so slow, it was impossible to do anything with it. You'd open it up and see the beach ball for 10 seconds. You would click on a link, and again, the beach ball for a few seconds. It was virtually useless.
So if you haven't upgraded to 10.7.2 for the iCloud support, at least to it for this bug fix!