Thanks so much @SMAr2wo ! I have been wondering for so long why both of my N900s always produced photos that were so crap and over-exposed. I saw other peoples' pics and wondered how they ever managed to get non-crappy photos.

The problem meant I usually used BlessN900 just because I couldn't rely on standard cam. I don't want to uninstall BlessN900 though.

I didn't know about the exposure bug either, @handaxe and had wondered why I could never get the right compensation for standard cam's over-exposure tendencies.

Thanks to you both. Maybe there's a workaround... I'm not sure I want to uninstall Bless.