Using OSMonitor, I noticed my CPU load was maxed out at 98/99%. Turns out it was the mediaserver running (system/bin/mediaserver). I killed all open apps, had no music or video running and it still loaded the CPU at max. A reboot fixed the issue. Running a stock Droid using 2.0.1. Has anyone seen this before? Any idea what caused mediaserver to be under load with all apps killed?