Had some issues with Words with Friends at first, but they quickly updated the app and it's working fine now. No more setting up my MobileMe calendars manually as CalDAV accounts. Nice. I forget it has multi-tasking now, I keep going home and then launching apps instead of double-tapping the home button. So used to that! Loving it.
Yes I agree that multitasking is probably the best new feature of iOS 4.2, but I agree that the fact that apps don't automatically have multitasking like webos an have to get updated is a bit pointless, and that it dropped the battery life down a bit is annoying. What I also found is that when you multitask it takes down the battery but when you just stay in an app for a while or switch apps by going back to the home screens rather than the fast app switcher it doesn't reduce the battery as much.
If anybody is facing battery drain problems,crashing issues with the ipad then try restoring it in itunes after backing up all your data in itunes.If the problem still persists then wait for iOS 4.3 to launch as it is rumoured to bring a lot of bug fixes and will hopefully solve your problem.Regards.