I can confirm this first hand since I have an iMac G5 ALS from 2005 that I purchased new. The first time it happened, Apple had a repair extension program in place to replace the logic board and PSU even if the iMac was out of warranty. That program expired a couple of years ago, though, so those with problems will either have to pay Apple or a Mac service center to fix it, or they will have to replace the caps on their own. Mine did it again around the end of 2010 so now I have to find some time to embark on this project. Not all the iMacs exhibit them despite them all using the same caps, but it's like a time bomb sitting there so just be aware.