While I understand there's been a recent 622 software update, this is an issue that's been happening for a few months. A random intervals, the channel changes without anyone touching a remote. On screen, it looks just like what happens when someone sits on a remote, channels changing rapidly in a single direction. But it could only be Casper sitting on this remote. It does seem to happen only when playing off the DVR, versus watching live. Until this issue, we've been fortunate with our 622, no problems whatsoever. In terms of other devices, we have a wireless "G" network in the house with an Apple Airport Express station sitting directly behind the 622. We are using the IR TV1 remote. On another note, it looks like we need to route the Ethernet out from the Airport Express to the 622.