How often do you clean your system?

I clean my desktop inside about every 4 months. Overdue a clean actually, thanks for reminding me!

Haven't even opened my Laptop since I got it a year ago (A) Probably full of ****. Maybe I'll have a quick look in a day or two if I even have the tools.

Like once a year I might realise how dusty and dirty things are so I just get the vacuum cleaner out and give it a once over.

Once a month on all my systems. I got 2 showoff pc's that should allways be cleaned :P. it takes like 25 minutes :P

NEVER, I vacuum the keyboard because I eat at my desk haha

Rarely if ever.