i do agree there seems to be a "trend" if you will, that more major bugs in games, over the last 2 years especially, uppon releases of games/new content. but also, generally (not always unfortunately), they get fixed, nobody is in fallible we all make mistakes, aswell as, it seems to me that one major element has been forgotten, especially by consumer's it would appear.
developer's only have so much money, and due to most deadlines (instead of taking the time to weed problems out. thanks capitalist buisness model.) for pc's, you only have so many variesties of hardware and software to work with, to test bugs and problems, and considering the growing speed of both hw and sw being produced, and used, and the uncountable number of updates, vertions, and modifications, it's realistically impossible to make a singular game, tested, on every singe possibility. the best they can do, is try the most common from the main hw and sw companies, and hope for the best. so far, they've done pretty good, and hopefully, they keep it up, but, they do seem to test it on fewer and fewer configs and rigs since around '04-'06 aswell. so that is rather worrying.
anyways, point is, chances are, yeah, there's gonna be major bugs, completely unavoidable as a whole and majority, and yes, everyone will run into them, it's just a matter of "when".
oh, and to thoes of you that say "think you can do any better?" and for the nay-sayer's,
Google: Unofficial Oblivion Patch.
YOU may not, I may not, but THEY ^ clearly CAN. so yes, people out there CAN.
anyways, just my 2 cents worth.