Xbox 360 graphics issue on Samsung 1080p tv?

I have the new xbox 360 with the hdmi port in.

I have also just bought a 40inch Samsung 1080p tv.

Im currently running the console through a hdmi cable, however there are some noticable graphics problems that occur through the TV. The main problem being that the shadows in games come out blocky, for example when i play Devil may cry 4, there is a level with loads of trees and light shining in between, but it looks horrible cos all the shadow lines jus look pixelated.

PLEASE CAN SOMEONE HELP ME?!

Thanks

Xbox 360 graphics issue on Samsung 1080p tv?

Your T.V. might not be cable of running high definition to it's fullest extent, but if it is then it will probably be a problem with your xbox's settings, check the settings on your xbox, see if it's running on 50 Pal or 60 Pal etc.

Xbox 360 graphics issue on Samsung 1080p tv?

are you sure it is true 1080 p