I've posted threads on this before but it's been a while so here is another thread for any new owners or people who've started having the same problem. Ever since I got it (last November) I have had problems with fan noise on my AE700. What happens is that I switch it on and it's great, very quiet. Then after a while, say 30 minutes to an hour it noticably increases in volume. You can actually here it ramping up. It then becomes distracting. After much experimention I discovered it's down to room temp. If the room is 22 degrees its fine. If it 23 degrees, it a problem. Now 23 degrees is a comfortable temprature for me and it doesn't seem like an unreasonable operating temp. So it was a problem in the winter due to the heating, went away in the spring, and is now back as the summer warms up. I took it back to the shop but they couldn't reproduce the problem (this was before I knew about the temprature thing). I also contacted Panasonic and they have never heard of this issue so therefore deny all knowledge. Has anyone else experianced this? I find it hard to believe I have the only unit with this problem. It would make it a lot easier to presuade Panasonic to do something about it if I knew other people had the same problem.