Well, like any OS release, there are plenty of problems. Let's make a list of all problems for the OS, apps, features, and anything else. If you have it, post a workaround as well. What I've found: If you install the 2.2.1 version of an app through iTunes, then update through the device, the app is often buggy and/or does not work. WORKAROUND: Install the 3.0 app via iTunes. The AIM application keyboard does not move, push does not work. I am unaware of a workaround. Post more!