I put 140 hours into Battlefield 3 multiplayer and I can tell you that I have way more complaints about that game than I do compliments. I keep playing it because friends ask me to play with them, and I feel like they play because they paid the $60+$15 for it.
Jeff already paid for his membership and during a time where not many games are coming out it makes sense to put some time into a game like TOR.
It's in flash, Firefox still doesn't support the HTML player. I'm on a 1680x1050 resolution so it does seem to be switching from 1280 to 920 when I re-size the window in any way. I think the Firefox bug you described is exactly what's happening for me as it re-sizes without any issues in Chrome.