Unplugging AC freezes KDE Plasma

[onlycheez]

Hi, I've got this problem.
Battery in my laptop is almost dead (bios is warning me) and quite bad AC plug meaning that very often power daemon says AC unplugged/plugged. And when this happens battery tray icon usually become a that I don't have battery in although I have. At this moment KDE Plasma freezes. Frozen are: panel, icons in tray (except non-kde apps like Dropbox or gnome network manager), widgets, alt+F2, popup menu on Desktop. Opened apps are running normally (even kde apps except Dolphin) or I can open them in konsole.
It's frozen only for some time like 1 or 2 minutes and then it's ok again.
When I try remove battery it works fine, but I need it in because of bad AC plug.
I also noticed that during the freeze upowerd process uses 80-90% of CPU.

I have HP Probook 4710s with ATI Radeon 4330 and open source radeon driver on Fedora 15 64bit.

Does somebody have any idea how to fix it?

[nullspace]

Bamp!

I am using KDE 4.7.0, and I am facing the same problem. The plasma widgets get frozen for a minute or two, sometimes longer. After a while, it randomly starts working again. I don't use a battery in my laptop at all, so I don't it's a problem with the battery.

I wish there was a "plasma-desktop --replace" option that I could use through KRunner.