Hi, thanks for the replies. No as far as we know there was nothing running on the box at that time (although obviously
something was)
Unfortunately I can't install any monitoring software on these boxes as there are very strict rules about what software can and can't be ran on these boxes, so unless it's something that is part of the standard Solaris 10 install then I won't have that tool available to me.
As Neo says, I may just have to write this off as a one-off (it hasn't happened since) and then maybe knock up a monitoring script if it occurs again.
Thanks for the help.