Yup, I have had only bad experience there.
I use bitstamp mostly now. They do have some ''bad gateway'' moments when there is a lot of activity, but it is nothing more than a little annoyance. Most stable bitcoin exchange experience I have had so far. This is a well developed exchange platform. Mt. Gox, on the other hand, is just awful. I do not think there is anybody who is actually completely satisfied with their service.