Well, I tend to believe that forums are not such a good indication of how reliable a particular piece of equipment is, for a very simple reason:
Mostly people who post threads on forums are people who are having problem. For every piece of equipment on any forum anywhere, you'll only have a very very small percentage of post from people who are very happy with their purchase want to share it with the world.
I believe a reason why there are so many post about the W4500 series is that it has proved extremely popular, both because of it's quality, and the excellent marks it got in reviews throughout.
Maybe it's a little harsh to have a go at WHF for their review of this range. A quick look in google will show at least 5 other Hifi/Electronics review websites which give an equally positive rating to this set.
Furthermore, I purchased and received a 40W4500 yesterday after much hesitation, many visits in shops, and a lot of time spent on forums such as this one. When it arrived and I switched it on, I was terrified at the idea of seeing the dreaded Clouds and Backlight. I spent 2 hours in the dark trying to fault it. And you know what? No problem. No clouds, no Backlight bleed, nothing!
One cannot dismiss the impact of mass paranoia. And while I do believe some sets have problems (and as a normal person with a limited budget for that kind of luxury, I very much sympathize with unhappy customers such as the gentleman from holland who started this thread), I do believe that this problem affects a minority of W4500. If you spend ages on forums like this, then spend hours trying to find problems with a TV, Blue RAy, or any other product for that matter, you will find faults, issues, little niggles, some of which might just be in your head.
I spent some time on the phone which a bunch of retailers (all of which are awaiting stocks) and only found one shop who acknowledged they had to replace a set. While I know that retailers may not be the most truthfull source of information, I also believe they wouldn't re-order a range that keeps coming back with problems.
Finally, I don't believe there is such a thing as an unbiased review. So before you splash out £1000 plus on something based on what some guy wrote somewhere, it's worth going to check out the beast in person.
T