[bortraws]

It's the same here. I did a clean install of Lion 10.7.2 and installed a crispy fresh PT 10 on top of it. Took me 2 full days to get the system and all my plugins up and running again.

Anyway, I am glad I did it though. PT 10 runs good except for the weird 1024 samples buffer error and the problems I've been having with Elastic Audio tracks being rendered incorrectly when opening sessions that contained EA tracks. And like you guys I now also experience the 1024 samples problem in PT 10 sessions and not just converted 9 sessions.

I produce my work in native sessions with 60 tracks as an average that include many plugins so I need the 1024 samples buffer to pull that off.

Hopefully Avid knows what the problem is and they can come up with a bug fix soon. I didn't pay the high upgrade price to gain some nice new features on one end but loose a big part of my processing power on the other.