Beepbeep n beebeep, yeah!
Join Date: Apr 2008
Location: La Crosse, Wisconsin, aka America's IceBox
Device: iThingie, KmkII, I miss Zelda!
If you have dl'd some large files recently, such as the MobiPocket Guide from here, then the CPU will be indexing while idle. This uses a lot of charge and may give you aberrant results.