Sometimes you just have to temporarily break things
Last week's thursday, I stayed up to switch the mailserver from folk to western. I had been planning to do this for quite a while, but hesitated to go ahead and do so because I was afraid lots of things would start to break. With the hard disk breakage that popped up, however, I had a reason not to wait any longer. Three hours later... everything was working fine. Minus the fact that I had forgotten to fix folk's configuration to send mail to western instead of delivering it locally, but that was easily fixed.
Perhaps I shouldn't be so afraid to break things...