Okay, unzip this (emergency.sh) on the root of your Kindle, then restart. That should create a 'jb_emergency.log' file on the root of your Kindle. The content of this file should help determine the extent/cause of the issues, which will then help come up with a way to fix it.
Last edited by NiLuJe; 10-11-2012 at 08:17 PM.
Reason: Fixed script