Exactly as HandEFood said... For Tingalf, because I found his black market and found the stash for the merchant before I found the note that the merchant's cart had, the quest couldn't be officially completed...
Now as for the fool that asked what Radeon I am using.. it is a Radeon 9800 with all the latest drivers.. this is a VERY known issue for most radeons, and even some non ATI card have had this problem.. it isn't an isolated incident and I cannot understand how after I explained that this is a VERY known issue, you step in and say, well, since YOU didn't have any "problems", that they don't exist...
Again, for me Patrick never gave me the Dragon breastplate quest... That is a BUG, not a quest failing for a reason...
Spelling errors make the work look very unprofessional and likely turned many people off from the seeming(and maybe not just seemingly) unpolished game...
My suggestions...