I noticed similar problems with my lappy following latest major updates and a subsequent re-install when errors occurred.
Laptop: TOSHIBA Satellite A305d / ATA Hitachi HTS54252 / ATI Radeon
AMD Turion(tm) 64 X2 Mobile Technology TL-60: 2000.00MHz
Processor: 2x AMD Turion(tm) 64 X2 Mobile Technology TL-60, Memory: 2982MB
O/S: PCLinuxOS 2010.12 / KDE Platform Version 4.6.1
Kernel: Linux 126.96.36.199-pclos6.bfs (i686)
I may be wrong here, but "Powerdevil" no longer appears to be bundled in PClinuxOS 2010/11 KDE 4.6.1. At least, I no longer see it in the Repos with Synaptic. As such, because of "suspend" issues, I had to to do some experimenting. I searched in Synaptic for terms such "suspend" and "hibernate" and found a few others apps available: "apmd", "guidance power manager", "powersave", as well as "WattOSPM", and I tested them out.
1. with "apmd" I can suspend and hibernate, but lose control over the CPU frequencies and the temperatures soar, becoming dangerously hot, but suspend / hibernate works.
2. with "powersave" I have to uninstall "apmd" (according to Synaptic it conflicts with "powersave"and one can only install one or the other). With "powersave" my lappy runs nice and cool but I cannot suspend or hibernate. In fact, the "power profiles" in KDE go missing. The best I could do is to install another app called "turnoffmonitor" to shut the screen off, otherwise, total shut down.
3. with "guidance power manager" I get no response at all. I can click on the GUI all day and it will not load. Not sure why. I suspect it also conflicts with "powersave"
4. Finally, "WattOSPM" is absolute crap and I would recommend that it be removed from the repos. It loaded, but it needs a lot of highly technical input from the user, and, for some dumb reason, it has a button attached to it for loading Firefox which totally borked my ALL my Mozilla apps (wasted several hours trouble-shooting that before I got them back).
If anyone else is experiencing similar issues, they should add them, as there may be something here that that the devs need to look at.
I have done a lot of experimenting with various other CPU related backend apps (installing, enabling and disabling) to get it to a point that it runs this cool. "Powersave" seems to be the one that did it.
If anyone has any suggestions related to "suspend / hibernate" probs, I would be keen to hear them.
Thanks in advance.