Battery intermittently "disappears"

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http://forums.fedoraforum.org – I've got two Activo AV-1000 netbooks. First one had its HD go bust and since I didn't have Win7 installation discs at hand when I got it replaced, I threw Fedora 17 on it. However, it suffered from major battery-related issue that I'll try to describe... firstly, the battery intermittently "disappeared" - the battery icon in the system tray kept flashing (disappeared and then reappeared after a fraction of a second and then disappeared again after ~1second again). At first I though this was a Gnome3 issue, but this happened on KDE as well. Secondly, the system kept getting progressiv (HowTos)