I brought the galaxy S 4 days ago, and was going great untill yesterday.
Middle of a text msg and it froze, and within minutes the screen was then covered in greenish lines, and didnt stop.. Woudnt switch off, or reset. And was unable to use completely.
I took this phone back, and argued my point across with sales reps, even though they could see it was clearly a faulty phone.

I am now phoneless. After driving in and out of the city, spending time, and money on this product.
Never been sooo dissapointed!