On about the 3rd 4th level1 card king of hearts appeared already flipped was left with this until the end of the hand and couldnt match it with the remaining other card a king of hearts. Leaving me unable to move on to the next level.

Just flip it back over by clicking on it again. (making sure no other cards are flipped up)

This will resolve the problem.

I flipped a card on level 2 and then the game "froze" and I could not play further.  the card below that one which I flipped just vanished, too.  I lost 500 bucks!!!

I got up to about 23k

I was actually beating Whiskey's score who is ranked 5

Then my laser mouse flew up to the X in top right and i clicked close

OUCH. but that wasnt a glitch, that was your own personal regret XP

I did and it didn't.

You have to make sure all cards are face down then flip another card. Then flip the bug card

This has been brought up a couple times before. I'm aware that the bug exists, but I can't replicate it regularly, so I'm not sure what's causing it.

If you should happen to figure out how to make it happen regularly, please let me know. Send a message with the steps you took to make it happen, and if I can replicate it myself, we may be one step closer to finally getting that fixed.

Thanks Tommy, it's only happened the once in heaven knows how many, i've managed to sleep since.

That's the same problem I have. It happens rarely enough that I can't pin it down and figure out what causes it.