Since I got L630 a couple weeks ago the average temp on the 622 in my office has jumped from 111º to 120º even though it's getting cooler in the room due to outside temps being lower. It hasn't had any problems - yet. The 622 in my living room has the same thing happening. I'm losing video on one tuner occasionally and yesterday it rebooted itself for what appeared to be no reason. When it came back on I checked the temp and it too was at 119º when it used to stay at 109º. This really bothers me.