I haven't used cryptsy yet to trade coins, but the last three times I've tried to log in it's made me reset my password. I know that I have it right, so there is clearly a problem with the site. Quite irritating.
That happened to me the first time I tried to get in to cryptsy as well. However after that It's been working all fine and I enjoy trading with them. They have reported high server load before and that they had a hard time coping with the ever growing demand in the beginning. I believe this should be fixed now.