Hard drive sleeping. Let it wake up on it's own...

High altitude condensation from U.S.A.F prototype aircraft has contaminated the primary subnet mask. Turn off your computer for 9 days to avoid damaging it.

Fluorescent lights are generating negative ions. If turning them off doesn't work, take them out and put tin foil on the ends.

HTTPD Error 4004 : very old Intel cpu - insufficient processing power