There is a particularly odd issue that occurs very rarely, but just occurred now, so i thought i would submit it.
Occasionally, when I am in the middle of a download and upload torrent, Suddenly the DL & UL counters go continually up. Now this wouldn't usually bother me because it looks like im downloading at 1 M/s +, but for the fact that I'm not. So i quit Transmission and then restart, and then everything is cool. It seems as if there is any change in the speeds Transmission just adds it to the counter instead of adding or subtracting the change respectively.
This is not a huge issue other than the fact that, in order to fix it, I have to restart and loose my spot in my download queue.