Websites on Kubuntu

[DP3720]

I have setup a Kubuntu Server to host websites for my kids. I am using Virtualmin to manage different sites.
The problem I am having is every so often, none of the sites are accessible. All I have do to resolve this is go into Kubuntu and open an application .It is almost like Kubuntu is going to sleep. I have gone into power options and disabled everything but to no avail.Any help would be appreciated.

[whatthefunk]

Whats the output of "xset -q"? Also, what version of Kubuntu are you using?

[DP3720]

It is Kubuntu 12.04
The output of xset -q is

Keyboard Control:
auto repeat: on key click percent: 0 LED mask: 00000000
XKB indicators:
00: Caps Lock: off 01: Num Lock: off 02: Scroll Lock: off
03: Compose: off 04: Kana: off 05: Sleep: off
06: Suspend: off 07: Mute: off 08: Misc: off
09: Mail: off 10: Charging: off 11: Shift Lock: off
12: Group 2: off 13: Mouse Keys: off
auto repeat delay: 250 repeat rate: 30
auto repeating keys: 00ffffffdffffbbf
fadfffefffedffff
9fffffffffffffff
fff7ffffffffffff
bell percent: 50 bell pitch: 400 bell duration: 100
Pointer Control:
acceleration: 20/10 threshold: 4
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 0 cycle: 600
Colors:
default colormap: 0x20 BlackPixel: 0 WhitePixel: 16777215
Font Path:
/usr/share/fonts/X11/misc,/usr/share/fonts/X11/Type1,built-ins
DPMS (Energy Star):
Standby: 600 Suspend: 900 Off: 1200
DPMS is Disabled

[whatthefunk]

My guess is that you have the "DPMS turning itself on" issue that I had with 12.04. Your readout says that DPMS is disabled, but it also shows times for Standby, Suspend, and Off which it shouldnt if you havent set these in Power Management. Mine looks like this:

DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Disabled

Do you use this computer for anything besides as a server? Have you ever had the screen go black while you were using it?

Check out this thread for more:
http://www.kubuntuforums.net/showthr...ght=xset+-dpms

Could very easily be something else though...hopefully somebody who knows more about servers and Virtualmin will chime in.