Similar problem: The same picture seen in the background of webpage in Firefox 3-06 is rendered with "level-curves", but saved (using Save Complete xpi, otherwise would not save) viewed in EOG viewer looks fine.
xdpyinfo | grep depths ... gives this: depths (7): 16, 1, 4, 8, 15, 24, 32
Similar problem: The same picture seen in the background of webpage in Firefox 3-06 is rendered with "level-curves", but saved (using Save Complete xpi, otherwise would not save) viewed in EOG viewer looks fine.
xdpyinfo | grep depths ... gives this: depths (7): 16, 1, 4, 8, 15, 24, 32