After speaking with OP, and going over things.
 I can now say that it was not done to cheat anyone or scam or what ever word people want to use.
 It was a error that occurred in the system itself.
  OP now realizes that this type of thing will happen and has changed the way the jackpot is run.
  As I stated several times I never thought it was malicious at all,
 And OP relized it after speaking with him and he fixed it right away.
 And for those who said I was mad because I lost get a grip on things.
 It was you all that were effected without even knowing it.
  But OP has fixed it and I do not see any future problems with his site and how things are run.