I'm experiencing some weird behavior...I wonder if it isn't a corrupted file on the SD partition. When I restart I frequently get the message "The process android.process.media has stopped unexpectedly" once or twice. When I go to Settings > Storage, it never stops "Calculating" anymore. Media & SD Card using a ton of battery. I'm rooted. Was stock otherwise until I put 4.0.4 on today, but this problem was happening before that. I'm coming from a OG Droid. What the (if I have to) factory reset process with the Nexus? Is there a way to preserve root and fix this?