It doesn't, you obviously misread the bored. It is likely your opponent had full house jacks full of 5s.
In this case your hand was 555JJ and your opponents hand was TTJJ7. Due to you holding a Full House you can't lose the pot to a flush either in case you have missed it. Normally you should have won the pot. If however you are 100% sure this was how the hand was played you can contact Pokerstars Support in order to get them to review the hand and see if there was any mistake or bug in the software when this hand was played.
No, a flush cannot beat a full house.
No
3 of a kind Aces can not beat a full house. In this particular case it is most likely that there was a pair and an ace already on the board, making the 3 aces and the pair on the board a higher full house then the other full house.
Yes
Yes
Yes.
Full House.
Carbon Poker, Full Tilt, Pokerstars. Most sites have them Carbon Poker is the best if you're from the U.S since you can play for real money. EDIT: Full Tilt Poker & Pokerstars are currently under FBI observation.
Four of a Kind Straight Flush Royal Flush
Last Comic Standing - 2003 Jokers Beat a Full House - 1.9 was released on: USA: 29 July 2003
If you mean all the cards have to be face cards, then it would be a four of a kind, full house, three of a kind, and two pair. For example: Four of a kind, four Jacks and a Queen. Full house, Kings over Queens. Three of a kind, three Jacks, a Queen, and a King. Two pair, a pair of Kings, a pair of Jacks, and a Queen. If you mean how many different combinations can be made using only only face cards, there are 95040 possible hands.