a customer of mine is using WP 3.4.1, theme: misty look 3.0 (german), bannerize 3.0.62.
the banner-code is inserted into the template, so each banner shows up neatly in the header.
it shows up on normal desktop computers using firefox or safari.
she runs also a little netbook, using chrome with that. and the banners seem not to work there.
not sure what's wrong with it. maybe you guys have an idea?