That game was also developed by a totally different team with a known history of buggy games and not much experience with the game engine. That was the reason that game was a bugfest. Fallout 3 was much more stable IMO and I think Oblivion was even more stable than that........that is from my experience though.
Oh I know (and concur about Oblivion/FO3 as well). But Beth were responsible for Q&A on NV though, and they/ZeniMax could have put back the game's release when it became apparent that it wasn't quite finished.
Also, now I think about it, the retail release of the FO3 DLC was dreadfully buggy as well, and turned my basically-fine copy of FO3 into something much more glitchy and unstable, which was a great big can of fail given the retail release was for precisely those people who didn't have access to XBL and therefore patches.
So yeah, I am slightly wary, but let's hope lessons were learned and Skyrim'll be fine, 'cause whatever state it's released in is how it'll be forever for us offline peeps.