Hello.

On a Windows XP pro sp2 and a nVidia 8600 GT 256 Mb graphic card I notice a graphic bug that displays parasites on the screen. In fact I can see short horizontal lines appearing a disappearing quickly during the game.

The bug appears after 1 or 2 minutes and continues under Windows, after I close the game.
I have to restart the system to get rif of these lines.

Usually this kind of graphic bugs are due to video-memory corruption.
You can try to update video drivers but I doubt it will change anything.
You may check your video card temperatures using a stress soft (like furmark, or somethinhg like this). If it grow anormaly it may be the cause.

This is weird because I don't notice this behaviour with other games.

I think I solved this problem by modifying the "C:\Program Files\WorldOfGoo\properties\config.txt" file.
In fact I just changed the refreshrate value from 60 to 50.

<!-- IMPORTANT WARNING: If you edit this file, your computer will probably explode. Your friend, the High Resolution Sign Painter --><br /><config><br /><br /> <param name="language" value="fr"/><br /> <param name="screen_width" value="800"/><br /> <param name="screen_height" value="600"/><br /> <param name="refreshrate" value="50" /><br /> <param name="ui_inset" value="10"/><br /><br /></config><br />