Turbo is right. A few examples:
Shift 2 - steering lag issues, freezing in menus and on track, magnetic car issues. There's lots more but game left as is after 2 patches.
NASCAR 2011 - just a game full of bugs and glitches, too many to list. Believe there was 2 patches maybe a 3rd, but still didn't fix most things or even make it much more enjoyable.
Maybe gt5 fans need to get out there a play a few other racing titles from time to time. Then maybe, just maybe....some will appreciate the continued support which is now over a year. Unheard of for a console game.
If anyone still doesn't think PD could've left it as it was at release, I suggest you go play one of those games above. Developers can and will leave games unfinished or glitched all to hell.