Homebrew Black Border when using Geexbox

[snikerz]

Hi folks,

i'm really enjoying the features of Geexbox as my media player on the Wii, like loading movies from my external Hard Drive

Although I have one problem with my screen when using Geexbox. There is always a small black border on the right side of my TV. It appears only when using Geexbox, no other homebrew or official software has this problem. I am using a PAL Wii on a regular Grundig SDTV (PAL). Is there any workaround available?

Thanks in advance.