Our computer gets a lot of dust, and has caused problems recently.
For one, the graphics card has been artifacting recently, and a quick temperature check sat it at 90 degrees IDLE!
I took it out, and dust was everywhere, in caked in the fan blades so no air was getting in or out.
I'm wondering if you can buy dust filters for conventional sized fans, because, you'd just have to remove them and replace just them. You wouldn't get any dust into the system itself.