That's the exact opposite of my experience there.
Just goes to show that it's all about luck in certain restaurants ;) I'd definitely go there again, though - I've been at least half a dozen times, and I've never had any problems, and I've been very happy with the food each time. Remember that I grew up on stuff like pierogi, so there's no way I'd eat in a Polish restaurant if I wasn't happy with the food :) It may have got worse since the last time, though.
Time for one of my related-but-kind-of-off-topic stories I think.
I once took my wife to a restaurant in London's Soho which was highly recommended by all the reviewers. It was one of those poncey places which (at the time) was quite new and fashionable; visible chefs, "artistic" presentation, sauce poured in funny shapes on your plate, child-sized portions (lol)... you get the picture. My meal wasn't too bad, but not really worth the money. Would have preferred the Wong Kei, but even I like to splash out a bit sometimes, especially where women are involved, hehe. Unfortunately, within a couple of minutes of leaving, my wife was vomiting it all up in an alleyway off Wardour Street lol. That never happened in KFC! haha :)
Hopefully she's not reading this (she's my ex-wife now lol) but if she is, my identity may no longer be a secret... lol.