Hmm, odd. There are two explanations I could think of:
1) It has to do with the plugins you use. But if you use my default screen you're automatically using the default plugin(links) so that's unlikely to be the case.
2) It has to with the upscaling that somehow goes wrong. Try to set your TV resolution to 1360x768 and run Mediaportal. See if it happens then.
I'm using the skin myself on a 1360x768 LCD fullscreen and am not encountering this problem, so there's a good chance it has to do with upscaling.
1) It has to do with the plugins you use. But if you use my default screen you're automatically using the default plugin(links) so that's unlikely to be the case.
2) It has to with the upscaling that somehow goes wrong. Try to set your TV resolution to 1360x768 and run Mediaportal. See if it happens then.
I'm using the skin myself on a 1360x768 LCD fullscreen and am not encountering this problem, so there's a good chance it has to do with upscaling.