Xperia pro problem

[smfaysall]

For the last two month, i had my xperia pro (mk16) upgraded.After that, i have the most interrupting problem.My Xperia pro restart on its own, particularly when I open an application.same problem sometime repeated when I'm talking. So I think that this is very very disgusting and my phone is totally retarted.I have already repair it using Sony PC companion but its still disgusting.Such a dissapontment

[MarlonUk1]

have you tried to repair it with http://www.sonymobile.com/global-en/tools/update-service/?

also try to see if there are apps that might be causing this