So my Razr had begun to run like molasses. I read a thread on here and deleted the app cache, and did a few more tweaks. It would behave ok for a half a day then go into slow motion mode again. Then a coworker reminded me to delete old text messages. I had 3000-4000 on my phone. I deleted them all and this thing is running like brand new again!! So if you are experiencing slow performance, remember to purge text messages. Makes a big difference.