[RoSs_bg2_rox]

As has been said, systems should never heat if they have a decent heatsink and some good fans to generate good airflow around the case.

I leave two of my desktops on 24/7. I reset one every month or so, or whenever I need to restart (only when the registry needs edited) as this is a desktop, so is actually being used. This one stays on even when I'm on holiday.

My server is on every day, but is switched off overnight, as it isn't generally needed. My new computer I just purchased will also be running 27/7, and has some good fans and filters etc. to keep it clean.

I am also going to convert one of my 386's into a linux IRCSSI box, which will run without keyboard and mouse, and just be used as an IRC server. This will run 24/7 too.

The only problems with this is power consumption, but I turning the monitor off greatly lessens this, and I don't tend to boot down HDDs etc, as I use them frequently.