I'm running Mosaic 9 on my Captivate. I have an external SD card with some apps on it, and everything else stock.
Today I for some unknown reason decided to wipe the Dalvik cache in recovery. I rebooted, and it was all fine and dandy, got to the lock screen, media scanner started, but then my phone shut off and restarted.
It repeated this, never getting farther than letting the media scanner finish. Occasionally my phone even fails to pick up that I have service...
Is there any easy way out of this cycle?