Hi,
I have had two total freezes (couldn't even ping it) with this kernel today. Nothing in the logs, it just stopped dead. The only common about the two freezes was that I was browsing with Firefox when it happened. System is up to date. I have now booted 2.6.10-1.770_FC3smp and the problem seems to have vanished.
I'll send further information if anyone wants it.
Best regards, jules