plain MAME pretty much sucks these days, you gotta use some kind of special version like nonameMAME or an optimized version for your processor. or you can just use Kawaks
not to mention their game releasers are whackjobs, they think theyre like godly. if u go on their forum and ask about why the 2001 games never came out when they should have according to their self imposed 3 year rule (which is now almost 4 years), they will bite your head off. i find it hillarious that hackers make a sort of honor code for themselves, when still they are pirates. people will try and debate this but they know the people theyre releasing it for dont have the boards, so theyre not legal. its really funny when you think about it. seriously they should just go to 0-day roms who cares when they came out, you ever hear of PC game warez, PC games still make tons of money even though i can DL doom 3 the week before it came out...
sorry offtopic rant..