[Plugin: NextGEN Gallery] Thumbnail overview screwed up in IE6

Hi,

The thumbnail overview behaves very strange when surfing it via IE6 some of the thumbnails are flaoting above the rest of the article. After clicking one thumb everything looks fine again.

Sample (surf with ie6 – gallery at the bottom):
http://www.trashboard.de/2008/08/05/silberne-kreolen/

Any hints?
Cheers,
nik