Remote Unresponsive

I'm not sure why this happens sometimes but while I've been testing tonight, at random this seems to happen. The easiest way to test is if it is occuring is to try to adjust brightness up / down. IF only one changes this is likely to be the cause. I have been playing with this issue for awhile now and I'm really not sure any more what's causing it. Every time I've noticed it happen I was connected to the web interface however.