Sv, I've noticed that too... I mostly play the Blazing 7's and one time at Showboat in Atlantic City, I kept getting the 7's, I had over 900-something credits, and then hit the jackpot. Similar thing happened at Harrahs Chester (big pay out before hitting the jackpot) and I also saw it happened at the Hilton in AC. I've even seen the Blazing 7's hit the jackpot ALMOST back to back (within, say, 10 minutes of the first jackpot).