I just purchased my SAMSUNG mesmerize and upon turning it on for the first time (after charging it), it went to the initial SAMSUNG screen and stayed there for about ten minutes before I finally tried to turn it back off and realized I couldn't. I had to pull the battery out completely to get it to turn off. I asked around and somebody suggested to me to boot it into it's recovery mode and do a cache clear and restore to factory defaults, both of which did not help. I can still only get to the SAMSUNG screen and cannot turn it back off unless I pull the battery. Any suggestions?