Yeah, I would think that too, but I haven't really lost anything else. Plus, the speakers were plugged into a fairly high-end APC UPS (a
SmartUPS 1000) which really should have handled any line conditioning problems. Plus, the RAID system on the HTPC is very suceptible to power fluctuations (which is why I got the APC) and if it had lost power even a little it would have had to rebuild the array. Everything else was fine on that same circuit though! I did see some reports of similar problems on the Klipsch Forums, so maybe I just got a flakey one that finally died....
The motherboard isn't completely dead, but the voltage regulator is bunked (the 3.3v rail which powers the PCI/AGP slots is only feeding about 2.1v). I looked it up (after the fact of course) and apparently that Gigabyte board is somewhat notorious for that problem. Plus, the occurrences were separated by about two months, and nothing else on the circuit with the Speakers (or the motherboard) seemed to have blown.
Who knows though. Luckily, both are still covered under warranty. I'm definitely looking at investing in another APC unit for my main PC, and maybe I'll look for a Power Line Conditioner as well. It just seems silly to buy a $300 power line conditioner to protect a $360 stereo system (of course the HTPC it would also protect certainly isn't only $360 though).