Anything can freeze, but there are usually recommended temperature ranges on the TV or in the directions for the TV. Other temperatures (hot or cold) will affect the picture and future performance.
Sony and Samsung LCD TVs are fairly on par with each other. Sonys tend to be a bit more expensive and have a nicer aesthetic design, but their picture quality is about the same as that of Samsung.
No. No house hold or normal entertainment speaker magnets will effect an LCD TV. Think about it, the speakers in the TV its self have magnets. Do not worry about placing speakers near you LCD TV. If...
I hear that the LGs are the best bang for your buck. I was looking at buying a new TV a while ago and while doing research I heard that the Samsung emitted an annoying buzzing sound when switched on....