How about those cases, when You get a "We were able to replicate that bug and contacted the bug hunters about it" message and then either silent and a "problem solved" marking (without it being REALLY solved) a year or two years later?

I have several products, which got no "solved problems" entries for which I did bug reports (sometimes with possible solutions) and received the confirmation that the bug could reproduced, but still nothing was really solved, but the bug report was "solved".

Yeah, I know it's often the PAs that do nothing about the bugs when they get informed about them. But still just marking them solved silently leaves a certain taste.