After reading bug report https://bugs.maemo.org/show_bug.cgi?id=8723

It seems that most people who are experiencing this bug have a mixture of dataplan monitor, recaller and simple FM transmitter widgets on their desktop. I have all 3 which i have recently updated; so i'm going to disable all 3 reboot my phone and report back to this thread in 7 days time or before if the bug shows itself before that time.