Once I upgraded to Lion, any time I'm at the lock screen (where it shows me my users on a textured backround), it'll freeze as soon as I click my user. If I sleep my computer and then revive it, it'll give me a few more seconds, during which I click the user again and frantically type the password, and then it usually freezes again right around when I hit return. Usually sleeping and reviving the computer one more time will allow it to complete the unlock and then I'm at my desktop where everything works fine.
I believe this was discussed and, seemingly, not resolved while it was still in beta, but
this conversation thread about it is closed.
I'm on Lion with an iMac, and I don't have any drag-and-drop or login issues like other people have reported, just this one.
Any ideas?