The reason is as a lot of you have found out ... the market is hosed. Specifically the private (purchased) apps. This is for those people that currently prefer to not run a custom rom. I wiped last night. I was very unhappy that I couldn't get get my purchased apps back. Once I installed all the purchased apps I didn't start them I just patched the OTA update, then I rooted the phone again and all is well. I'm still not able to see the apps in the market of course despite them being installed but at least this may help some newcomers from getting upset.