[ale] weird problem with screensaver and stand-by mode for fedora core 5

[Van Loggins]

I'm having a rather unusual problem with fedora core 5.

system is a home-built system that has up until it was replaced with a
new XPS 200 Dell system ran windows xp professional with only the
usual problems that windows has (viruses, spyware,etc.)

system specs:

Asrock X533 Socket 478 MB 1.0 bios revision
Intel Celeron 2.2 GHZ
1 GB DDR Ram ( 2 x512 MB)
Western Digital 7200 RPM 20 GB HD
Sony 4X DVD+/-RW Drive
EVGA Geforce 4 TI-4200 VIVO 128 Meg AGP card
AC97 Sound Integrated
Onboard Lan disabled.
D-Link 530-tx PCI NIC

system has a fairly stock install of Fedora Core 5 with SeLinux
disabled, I used instructions from 
http://www.stanton-finley.net/fedora_core_5_installation_notes.html

to get the system up and usable for my needs. The only step I haven't
applied is the one for installing sun java as I want to evaluate the
open source version of java that ships with fedora core 5 before I
replace it, as it may work fine for my needs.

The problem is that for no apparent reason the system will activate
the screen saver on me like the system has been idle for long enough
to turn it on, this happens with me sitting there in front of the
computer actively using it. At first I thought it was because of the
stock kernel but I used Yum to update to the latest kernel and this
did not fix the problem. Next I thought it could be due to the system
needing to have the Nvidia drivers installed so i followed the
procedure in the link I provided earlier to install nvidia driver
support and I am still having the same problem.

I do not know if this problem is related but on at least one ocassion
I have came in to find this computer in a stand-by state that I am
unable to wake the computer up from, the only way to regain access to
the computer is to press the reset key.

Does anyone have any ideas or a known working solution to this
problem? I haven't been monitoring the fedora core mailing lists for a
very long time so there may already be a fix for this problem if
anyone else has experienced it.

Thanks for any help you can provide... I'm sitting here scratching my
head, FC5 runs great other than this problem and loads with much less
memory used than the previous versions I have used in the past. only
90 megs used when Iogin with a gnome session.