Minimum raise is not correct. In no limit and pot limit re-raise always has to atleast equal what was raised before in current betting round. For example: blinds are 5/10 and someone bets to 50 chips. The bet was 40 more, so if someone wishes to raise that he/she must raise atleast 40 more to 90 chips total.
Fencer: I'm not sure if such thing as official rules even exist for Texas Hold em :) Anyways, i can't think of anyplace where minimum bet works otherwise.