Sony Bravia issue

[Nemesis_Enforcer]

I have a 46" EX500 Bravia LCD television I purchased back in Late October.

I am noticing light and dark banding going horizontally across the screen. Could this be a connection error or could this be my television.

I also noticed was looks like a drop shadow on the sides of the screen. It's very noticeable when I boot up my Xbox 360.

What would you suggest I do? Is the tv not working properly or could it be my display settings?

Thanks in advance.