We've seen reports of strange video behavior with Apple TVs before, and it looks like a new problem has now cropped up with the most recent update. According to a growing number of reports on the Apple support forums, those using an HDMI to DVI adapter to connect the device to their TV seem to have been hit with an annoying issue that causes their screen to flicker every few seconds. That's apparently happening with a wide range of TVs, and at least some are also reporting the same thing happening even if they aren't using an adapter. A few folks have apparently been able to fix things in the interim by simply pulling their HDMI cable and plugging it back in, but most are stuck with the annoying issue -- or worse, a downgraded 480p signal. Having some similar issues? Let us know in comments.