halon system went off and killed the operators.

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.

Flat tire on station wagon with tapes. ('Never underestimate the bandwidth of a station wagon full of tapes hurling down the highway' Andrew S. Tannenbaum)