OS X resets time to Jan 1, 2001

[weg]

Hi,

I've just booted my MacBook (Snow Leopard 10.6.3) and got a warning that my clock is set to a date before 2008 (it's Jan 1, 2001, 0:00) and that this may affect some applications. Moreover, OS X forgot my preferred wireless network (which makes me think it's not just the time server acting up). I've found out that other people had a similar problem, but I couldn't out the reason for this weird behavior. Did anyone here experience something similar?

thx
EDIT: Btw, I'm connected to a time server, so by now OS X is using the correct time again.

 

[maflynn]

I'd say that your battery in the computer ran down, you know the old style batteries for the cmos, but MBPs don't have them.

 

[weg]

I'd say that your battery in the computer ran down, you know the old style batteries for the cmos, but MBPs don't have them.

Yeah, Macs use EFI, they seem to have a PRAM battery, though.

 

[munkery]

I had this occur after I played around with the firewall settings and then restarted my computer.

Solved by turning off the firewall, deleting the firewall's .plist file, and restating the computer. I had to turn on the firewall and reconfigure it's setting after the restart, obviously.