Just started playing Skyrim on PS3, using 1080i through component, when the menu is open, the white horizontal lines flicker a lot.

Hey this is little off-topic, but ur lagging on ur ps3? And what ps3 u have? Slim?

Yes this is off topic. Please don't post off-topic.
I have not experienced any lag yet (Although I have experienced the game hanging). And I am using a PS3 Slim.