XMB Menu – WTH!?

Hello, I’ve got a question about the XMB menu. First of all am I using a LG LCD tv 37″ (Full HD) with a HDMI cable. I bought a PS3 slim in the beginning of october 2009 because my PS3 fat crashed. Anyway, when I play a game and open the XMB menu via the PS button is the quality of the menu really bad! I find it very strange because when I open the menu in the same way when I’m using the Internet Browser the menu has got a very clear and good quality. I would be very glad if someone could help me or find a solution to the problem! Regards PuckelRygg