I normally do not post threads because I usually can google question and resolve the issues with my phone myself, however I am experiencing severe problems right now. I have an iPhone 4 running ios 5.1.1 (9B208). My phone continuously freezes and shuts off and I am unable to turn it back on unless I remove and reinsert the battery. In my diagnostic my phone displays over 200 errors (in the last day), including some dated 12/31/1969. I have restored my phone as a new phone and erased all content and settings to no avail. I really am at a loss as the what the problem could be since the issue literally appeared over night. Here is some console information that could maybe help you understand the problems with my phone : ==== Attached at 5/28/2012 8:58:06 AM ==== May 28 08:46:59 unknown kernel[0] <D - Pastebin.com

Is it possible the battery is not giving a constant power output anymore and needs to be replaces?
Did you try to DFU restore the device and check if the issues still exist?