Most of the glitches have been fixed. It updates quite frequently on my PC version. Like you, i dont have patience for glitchy games >.> like Resident Evil Operation Racoon City... but i can tell you that the Skyrim glitches are VERY far and few between. Mostly the glitches are in speech.
This game is most definitely worth buying, practically all of the glitches for the consoles have been fixed there is hardly any lag anymore, and most importantly it is a great game overall. This game is !00% worth its dollar value not just because of its replay value but also because of the mass amounts of things/choices you can do/make the possibilities are endless, then when you finish one character i guarantee you will want to create a different style of warrior and play the game through as a different fighting style.
Absolutely! I enjoyed this game a lot. There might be some bugs and glitches but nothing serious to alter the gameplay. It has a good main storyline too! You'll get hooked to the game after you've played for just a second. But I recommend you buy it on a Xbox(If you have one) so you can get the new DLC pack, Dawngaurd :-)