Okay, not quite general discussion as such...
But, of recently, it seems that the quality of games developers is in decline as more and more games are blighted by bugs or problems introduced by patches...
For example, FEAR has a VERY irritating problem where it refuses to load up when you are connected to the Internet, this was introduced in patch 1.2.
Valve have introduced a glitch via an update that has made all the shaders over-zealously bright, this has effected EVERY game / mod that is powered by Source...
Battlefield 2, my my my, where do I begin... Patch installers that don't install for everyone even if you have met all requirements (adequate hdd space, default install locations etc.), invalid CD key errors, the notorious out of date punkbuster and modified content errors etc.
Battlefield 2 is THE buggiest and most awfuly coded game I've ever come into contact
with in my whole career of gaming EVER; Kreed may be the worst game ever but at least that just worked...I've spent way more time trying to get Battlefield 2 to work than I've spent playing it...
I'm sure there are many other games out there worthy of mention, but why has all of a sudden so many different games have had patches that introduce more problems...