I found this discussion while trying to find a fix for my iPad as well.
Lets get it straight folks.
Apple is getting ready to unveil a new operating system. They've already invited some of us to beta test parts of it. The invitations went out right after the ipad update issue started.
The fast and easy fix would have been for Apple to reset its OWN system and work out beta conflicts in house. They don't WANT to do that. It's not cost effective. They will make more money on products sold with the new OS, than they would fixing our small issue.
There is NO FIX for the app updates until Apple starts to care. As long as cash is talking, it won't be an old ipad they care about. It's the sale of new ones to come that take priority.
It may not make us happy, but it is good business cents.
Guess we just have to wait it out.
P.S. I can't get into iTunes 'purchased' area either. And those folks who don't do direct computer hook ups, but rely on wi-fi syncing are just plain screwed.
Personally I feel Apple offers such a fantastic operating system over the others that I won't switch, but that is about the only thing that would force them to make this tiny glitch a priority.