I have had no problems with the main KDE version on two machines of my own, have also installed it on two other people's machines, one who had never used Linux before but whose machine had been overrun by viruses.
It's stable and very fast. I've had no segfault problems, and as for the LXDE version, none have been reported at the forums, so timetraveler was just unlucky I guess.
The KDE4 implementation is simple, which I think is the best starting point. Thanks to the KDE Control Centre, it's easy to customise and add all the tricks/features/effects available. I like the Running Tasks to be displayed with the name alongside, not just the icon, but that is easily changed (http://www.pclinuxos.com/forum/index...c,71784.0.html
Most hardware just works™, but the PCLOS control centre can sort out the vast majority of problems and/or save settings. Plenty of power in there for a number of administrative tasks.
Boot and shutdown times are vastly improved. Everything is snappy and responsive.
Plenty of help at the forum, too.