I too experienced problems with the new driver… I reverted back to the 3.5 which was working flawlessly. I’m using a 2.8 OctoCore Mac. I went through all of the normal fundamentals trying to get 3.5.1 to work but finally gave up. I suppose it’s ok to share drivers… shoot me an e-mail and I’ll send you the 3.5 driver for Mac as it is only 8.5 megs. Good luck in the meantime!