Scooby-doo and the spooky swamp - flickering white rectangle

[glowi]

Hi,

I tried to play Scooby-doo and the spooky swamp, which is reported perfect with the Dolphin and the game's got a big flickering white rectangle in the left top screen corner. The first screen with wiimote instructions is flickering too.
I tried Scooby-Doo first frights and the game has the same problem.

I tried it on two PCs with the same result.

Does anybody know how to fix it?

thanks in advance for any help

[glowi]

Found out solution by myself: Check Graphics > Use Real XFB checkbox to get perfect image (OpenGL plugin).
But with latest builds, this setting makes image bobbing , to jump up and down 1-2 pixels. See http://code.google.com/p/dolphin-emu/issues/detail?id=2359.
Older builds are ok I use SVN R 6206 x64