Hum... different views and experiences...
I'm going to file the 180Watt PSU as lucky, unless (Brad) you can tell me that it's not running hot.
As for FunkyD, He was running the CPU overclocked, and he did have 3 HDDs (read it again), a RAID controller, a CD-ROM as well as a CD-writer. As Paul (FunkyD) indicated, the PSU fried when he was burning a CD, although he did have a damaged-from-shipping PSU.
jtroutma: there's nothing like trying to make a point, and doing the opposite! I think you see what I mean: a bigger PSU will not only make sure that a power shortage is not a problem, but it'll also help prevent the PSU from dying of thermal cycling. I've seen it too often, and I'm not going that route again. I've even seen fans die from the heat load!