I have experienced flicker at the lowest "one bar" level where the CCFL backlight is illuminated, and wrote to Philips, don't have anything saved, though. The bottom line was what you are doing - moved up to "two bars" and that was that. Just tried the lowest level, and it seems to work, but perhaps room temperature is a factor; it's going towards spring here and it's warmer. Philip's response was, if I recall, was nothing more than turn it up a notch, which led to questions of battery life, does the stepped down brightness save any power, to which there were no responses.

This had nothing to do with firmware, software or anywhere. It's likely the same bad luck that has permanently dimmed the EL hardbutton backlight, I hope the CCFL behind the LCD panel stays bright!

Bill Halvorsen