I have a mid-2010 MBP with an Intel 510 SSD in the main bay and a HDD in the optical bay. Setup worked fine with Snow Leopard, but with Lion, I constantly get beachballs at the login screen -- i.e., one out of every three times I restart the computer, it beachballs at the password prompt, and I have to hard reboot. I have wiped and reinstalled Lion clean several times--no difference. Anyone else having issues? Any ideas?