When I switch on my PowerBook it asks for me to set the date and time, so I do, but it keeps losing the settings i am entering and each time i reboot it asks me to enter the details again.
If this were a PC I'd say your CMOS died, but since it's a Mac laptop, I'm not sure that battery exists....so I'm not entirely sure. Could you just set it to update date/time automatically?
Have tried that but it just cancels all the settings to do with the clock when I reboot. it's really strange, not come across this problem before, but it starting to get annoying now!