Konqueror and a painting glitch

[Kimmo Sundqvist]

Hello

Visit www.descent2.de

There is a quick navigation menu at the left side of the page.

When I hover my mouse over it, it scrolls open.  Then I remove my mouse, and 
the menu scrolls out of view, leaving behind a mess of grey columns.

If I scroll the page up and down so that the part where I was when I opened 
the menu goes out of view, and then scroll back, the page turns out normal.

I am using Kubuntu 6.06 (dapper) with Konqueror 3.5.2 with a 32bit AMD Athlon 
and Nvidia's accelerated driver.

-Kimmo S.