One of the windows becomes frozen in fullscreen

Hello. I would like to get some feedback from AIR team regarding this bug:

We have a custom assembled computer running under WindowsXP. It runs AIR app with 6 windows, 5 of them running in fullscreen mode on 5 touchscreens (3 videocards, I believe ). The problem is that one of the screens (randomly) becomes frozen at some point. I mean the AIR window on that screen. As soon as you leave fullscreen mode it becomes alive again (being re-rendered and continue working normally).

I've made two sort of tests to ensure that this is not monitor issue:

1. I quit fullscreen mode on another window of that app (on another screen, the one was working properly) and moved (with use of keyboard) it on top of frozen one — the moved window updates(renders) properly (on top of frozen one) — so the monitor is ok.

2. Performed a series of touch interactions (full date and coordinates logged into txt file) — it shows that monitor works correctly, e.g. recieving mouse events and, what's most important, AIR app also recieves them. The only weird thing is that mouse coordinates were not an integer value for the frozen one (stage scale mode is set to NO_SCALE of course).

AIR runtime version was 2.6.0.19120. The hardware acceleration is disabled since it was leading to various troubles before.

I've upgraded to AIR 3.0.0.4080, but haven't got feedback yet (if it runs properly or freezes).