For the past several weeks my Tour re-boots automaticaly especially after opening SMS tx or Email msgs. Yesterday it did this 3 times in a matter of 15 minutes. It will do it about 3-4 times per day. The screen goes black, the hour glass appears, the indicator light goes red for about 20 seconds,  the Blackberry name/logo appears on black screen and a status bar appears which then takes about 3-4 minutes to complete, then my home screen comes back and it runs a "Verifying Security Software" process which only takes about 15 seconds. Sometimes when I send an em msg or txt msg I will get a sent confirmation but then it will re-boot and after the re-boot the msg will then show as failed. WHATS GOING ON??? Anybody else experiencing this?