Power corrupts. Anyone got a Dranetz (or similar) going cheep?
"1. Single point of failure, `nuff said.
2. How long does it take to replace a "faulty power supply"?"
I'm not sure I know, given that nothing important I've worked with ever had a single point of failure ;) but British corporate management seem to have plenty of expertise on the subject.
To name but one widely and implausibly reported example: