1 month ago: 1 vertical line, 2 inches from the right frame, 1 pixel wide. Black line on blue bg (the bg you get when you have it hooked up to the dvd/gaming console before it is on); turns red when system is on. line is universal across tv input, dvd, and gaming
vertical line would disappear after 20 minutes, and 50% chance of being there when the tv is first turned on
last week: 2 vertical lines; one on the left, one on the right, both 2 inches from either side of tv frame. left line is 1 pixel wide. right line is now 2.5 pixels wide (2 pixels completely blacked out, 1 pixel that is half-blakced out--faded)
today: left line is now 2 pixels wide. right line is still there.
called mistubishi customer service (800 332 2119, push 5 for agent). they transferred my call to a service center, who will come in this monday to check out my tv. so we'll see what happens...
no one seems to know anything, as i had read these forums and was asking questions like, "so what happens if the panel is replaced but 4 months later the same problem arises, except that now i'm outside of the warranty?"
i really regret purchasing the mistubishi in july 2008 for $1999. I should have gone with my coworkers' personal experiences with their vizios, purchased with similar specs (46", 1080p, 120 hz, etc) for $1300, also in july 2008. i wasted $700+ for a tv that, during the first several months, was great, but now is giving me a great headache. i feel so bummed because i am usually pretty cheap...but thought i'd "spoil" myself this one time. lesson learned.