I've noticed that FlashGot slows down with repeated use.
I use Build Gallery, which generates about 12 links, then FlashGot All. After about 400 iterations, both windows (Build Gallery & FlashGot All) have slowed from almost instantaneous to taking a second or so to react. Rebooting clears the problem.
I have FlashGot 1.3.3 (with default settings), Firefox 7.0.1 & W7 64.
Flashgot slows with repeated use
Flashgot slows with repeated use
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1