Winning a few in a row is not uncommon anywhere. I play at this casino in Nevada (I'm sure others do it) where they have a kill button. If the same player wins two hands in a row over like $10.00 in the pot, he gets the kill button, and the blinds and limts double until that player loses. And it goes on a lot - its just the worm, I guess.
I think you might play a little different online than you do offline? Little more distracted, tv on or something, the game moves a lot fast because dealing is almost instantanious - stuff like that. I don't know about what you have seen on PS I play there all the time and haven't noticed anything off about it.
Knapper
Life is uncertain, eat dessert first, and make your good-bye's count, because nobody promised you tomorrow.