The Samsung Galaxy Tab is a wonderful piece of hardware....loaded with an unfinished, buggy, software (Android).
My wife and I have owned several android devices since the G2, and what you're complaining about is true of all Android devices. Interestingly enough I owned a hacked HTC HD2 that was capable of dual booting either Windows Phone 7 and Android at one point. Neither OS was the native OS, however, Windows Phone 7 ran beautifully, and Android was very buggy. The same was true of my G2 and the wife's mytouch and EVO.
Android, IMO, is best suited for hardcore techies who love to tinker. It's a very capable OS if you're willing to invest the time and deal with the little quirks to make it work. But I don't think its a good OS for most people. Im a tech nerd at heart, but given that my mobile devices are closely integrated in the delicate balance between my work, school, and personal life, I simply dont have the patience to deal with all of that any more, particularly when the alternatives (iOS, Windows Phone 7, WebOS) are plenty capable without all of the issues.
I gave Android a very strong consideration when shopping tablets, and took a hard look at the Asus EEpad transformer. But after spending a lot of time with it in the store and getting some feedback from transformer owners over on the XDA forum, found that it was more of the same Android, and that it wasnt for me. iOSs wall full of App icons UI feels very antiquated to me, IMO, and I much prefer Androids Widgets (and windows phones live tiles), but having to jump through hoops just to get Android to work decently is not worth the trouble for me anymore.
Lack of stability (compared to iOS), less than ideal batter life, and an un-intuitive OS (out of the box) is inherent in Android. Its a consequence to the openness that makes Android great. It's hard to have a truly open source OS, and expect everything to run consistently and smoothly. If you aren't willing to deal with the quirks inherent in Android, and do not care for the open nature of it, I'd strongle suggest getting rid of the tab while you can.