drip
The stiffened tubing weeped just a *tiny* bit every time I jostled it to change out a hard drive or add another stick of ram, but I never saw it. Every time I'd inspect for leaks, I'd never find one because it was only leaking under special circumstances. Every time I thought I had it fixed, I hadn't. So, it dripped... right onto my $200 video card, destroying it. And the card I'd just replaced. And the crap old card from my old computer- finally, down to my last junk video card- I discovered the REAL problem. Was time to get a new computer anyhow *sigh*