It can be tempting to blame losing on factors outside your control. However, I have yet to see a convincing argument to support the contention that
Poker Stars or any other site is rigged.
And if you truly belive that, then why are you still playing there? Or, if you are going to play there anyway, then why aren't you adapting your play to take advantage of the site being rigged. For instance, why go all in with your KK hand? If the site is actually rigged, then you should be looking for opportunities to suck out on other players by going in when you're behind, not ahead.