That's a good question. I haven't come across that before. (I'm assuming you're on AOKP?) Are you switching between ROMs at all? I'll power off and change tonight and see if it happens to me.
I'm on blur right now and dd it for few weeks. I have noticed that with some other aokp and blur but not all ROMs behave like that. I never had that issue with any ROM on my Droid x but it seem to happen on RAZR now and then with certain ROM
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