[ UPDATE: also check out this post for possible solutions ]
I suppose it was inevitable that the BlackBerry would also succumb to a bizarre "SOD", and I suppose a WHITE screen is the most appropriate, since it's the opposite of the BLACKberry's style. I just didn't anticipate to experience such a glitch with my evergreen and ever-reliable BlackBerry handset. Doing a search on the internet revealed that I'm not the only person with this problem, but what has surprised me the most is what's causing it...
Strangely, I've only ever noticed it when I've had it resting on my pile of papers on my desk in my office. The most strange thing about it is that it seemed to start with Google Talk, but soon migrated its way to any application that I was using.
For some reason, it would look like it lost a display signal, and artefacts would occur all over the show, but it was almost still visible sometimes. Then, when it blanked out, I'd have to move my phone aside and let it rest while I carried on with my other work, and over some time it would come back.
This went on for a few weeks on-and-off (but only in my office in front of my keyboard) when I discovered the cause... at least, I'd be prepared to bet my BlackBerry on this being the cause.
Underneath my pile of paper, but near-enough to the top of the stack to be near or in contact with my BlackBerry 8900, is the very plastic CD sleeve that came bundled with the BlackBerry software CD (see image).
I've since established that when my phone is near or in contact with this very CD sleeve, it will experience its WSOD, but ONLY then.
I have no explanation for this, except that maybe the plastic is causing some static interference with the phone, but when it's not near or on the plastic, the phone is fine, and I've yet to experience the same WSOD symptoms!
I can't understand it, but there you have it. Hopefully this will make someone's life a little simpler :)