Share your experience!
In my case it happens nearly everytime I restart my phone.
I have no idea what can cause this actually. Try repairing the software in the phone and see if the problem persists after, it seems to be something wrong with it.
PC Companion..
Before repairing your device you may want to backup your information first. Check out this topic for more information on how to.
How to backup?
If the issue should still remain I think that this needs to be examined and fixed at a repair center. For more information about how to submit your phone for repair and where, contact your local support team.