[TXLady]

Personally, I think it may be the microchip embedded by the aliens instead of the blackberry. (JK)

To the OP, if you can prove that it is the blackberry by doing the test suggested above, then I wonder if you would have a case for a warrenty exchange since this is not normal for blackberries and certainly impacts your use and enjoyment of it.

Edit: I now see that this was an old post somehow brought back up. And that someone else did exactly what I suggested above so at least that validates exchanging the BB.