Comment 12 for bug 313573

I had the same problem on my eee 900 running easypeasy, UNTIL i tried to fix a microphone problem by uninstalling PulseAudio!

I followed http://forum.eeebuntu.org/viewtopic.php?f=26&t=999&p=4229

As mentioned there, using Synaptic I uninstalled all PulseAudio packages, then installed ESound, rebooted etc, and not only did my microphone work well, but also the periodic system freezes (induced also by cat /proc/acpi/battery/BAT0..) especially during video playback, where gone!

I dont think this actually solved the problem with acpi, but it certainly did remove the video & audio symptome glitches. Good enough for me in the short term..