Crazy fact about small point of backlight bleeding!

[blu lover]

I am confused.. I replaced my A650 again and I got a nice screen, almost no visible clouding).

I really liked it, but, I've got a uhh.. like a point (half an inch) of backlight bleeding on the botton right corner of the screen. The fact is that it really bothers me (when the movie has black labels), but it sundenly (also gradually) disappears after about 20 or 25 minutos. I mean when the panel gets warm I can't even find that annoying bleeding anymore, as if it was never there.

Can someone explain me how is that possible?
It's been a week and I turn on the TV then there it is, a small bleeding, so after 20 minutes where is it? gone! Even If I turn the TV off and on, it doesn't get back, not without turning it off for about an hour or so.

I didn't replace the TV again because it is really a very small bleeding (that goes away after 20 minutes), and I had horrible clouding on the other panels, so I decided to stick with it, but is there any way I can get rid of that for the first 20 minutes? I mean.. forever?

Whatever, as I told you guys it is really small and only noticed from the right sit, but I really 'd like to know why does it disappears.