how long has tiger been around?
leopard is new so it will take time to get everything working right and get all the bugs out of it so it can run great on our amd systems

you can't expect everything to work right away
sh*t i can't burn dvds or cds on my system in leo but a month ago i couldn't even install it because my nforce4 board wouldn't work now it installs
i say give it time keep posting about the bugs that we have and put our brains together and soon we will have a bug free hackintosh for our amd systems

just my two cents
i could be wrong