Case Location

I know this isn't really specific to CPUs, but I wasn't sure which forum would be better; sorry if this is way off topic.

Here's the question. Is there any danger of putting your case on a carpeted floor for operation? I would think that once the case is plugged in, it is grounded, so there should not be a risk of static electricity. Am I wrong?

Static electricity should not be a problem, but dust and carpet fuzz may be.

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I love removable and washable filters on case air intakes! I've got a PC at work with a filter like that and it rocks. I just clean it every so often and I haven't seen any real dust buildup on the components yet.

Meanwhile, my other PC at work is a dust magnet! I even keep getting all of these little dead gnats in there. (Don't ask me where they come from though. I haven't seen any flying around anywhere.) It's horrible. I swear I have to clean that case every three months or so or else it starts to get unstable.

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I have a Lian-Li case with removeable filter. It's cool! After 8 months of not cleaning the inside of my case the cards doesn't have great dust build up. I would like to know how to remove the fans coz they catch some of the dust not filtered.