I don't have too much trouble with poker sites and when i do its usually something I've done wrong...lol
However, I HAVE had serious problems with CelebPoker. I can not sign on there to save my life. It tells me "username/password' incorrect, even though i know its not. I emailed them a few nasty grams and never got help so i gave up.
I also have had trouble at PartyPoker. With buttons dissappearing in the middle of a hand. only way to fix is to go out and come back in, no matter what i've tried. I email them a nasty gram too after i got no response to my 1st email and still no response. that was over a month ago....