I think you maybe right. I have been trying to update and download some apps and I have been waiting for hours for them to download and nothing happened it just stalled on "starting download". So I did a factory reset to flash back to 2.1 and voila I now can install and update my apps. I wonder if any other early froyo adopter encountered this same problem?
A great many of us did a factory reset and stayed at 2.2 and cleared up every number and nature of problems.
Something was tangled up somewhere.