I have had two occurrences now of a 6.5 SP4 server simply restarting. I have
four servers in a tree just running simple file and print, and the server
that is rebooting is what I consider the main server with the accounts
package on.

About three months ago, someone reported an access issue and when I checked
the server it was rebooting.

This has happened again today. There is nothing in the log to indicate an
error. There was only some normal entries dated 17th April and then some new
entries for 26th April that show a system booting.

Anyone know what I can do to check what's causing this?