Reboot after Panic

I've got htis message on our sun U60 machine:
"Reboot after panic:errID 0x000004eff........." ,this message have been issued on the /var/adm/messages file & cause system rebooting randomly.

Any comment.

Thanks,
--Nikk

We'd need to see the whole message to be sure, but usually when you get that kind of random panic it is due to uncorrectable memory errors, or CPU errors. In either case the solution probably involves getting the failed hardware replaced. If you have Sun support it is time to get a trouble ticket started so they can analyze it for you.