Server reboots when accessing a hosted web page

[sashka]

Hi,

I have a problem that I do not really know how to go about... It started happening all of a sudden and it is really non-deterministic.

I run Apache2 on a Debian computer at home, and when accessing web pages hosted on this server from another home computer (or from outside), my Linux machine sometimes simply reboots. As if the HTTP request is doing something very ugly...

The things that changed recently are
- upgrade to Debian "itch" release (stable)
- installing latest ("itch" stable) versions of mysql, php, etc.
- change in apache config to have "HostnameLookups On"

Some changes are pretty drastic, others aren't, but I cannot really say that the problem started happening since any particular of these changes... Today, for example, it is really bad. But nothing has changed for a while.

Is it some piece of hardware that's starting to die? Or what could it be?

The pages I access are varied: static, server dynamic (SSI / PHP), client dynamic (JavaScript). So there is no correlation here.

I checked a few logs (apache error.log, dmesg, etc.), but found nothing suspicious. I really have no clue of what to look for.

Please help

[sashka]

Some more info. I decided to use G4L to backup the drive. When G4L starts the actual backup process, just as the image file is started to be created (like a few megabytes), the computer reboots. So it seems to be a problem with harddrive... Can anyone confirm that my suspicion about the harddrive dying is the most plausible one?
Thanks...