Is anyone else experiencing video jittering on their Co-star? I have a Vizio Co-star, hooked up to my TiVo and a Vizio TV. I'm enjoying the interface and watching internet video on my TV. But randomly I start experiencing video jittering. The audio is completely unaffected, but the video skips forward and backwards by several frames repeatedly. If I switch around on inputs (like turning PIP on and off, or switching the TV inputs), eventually something will make it go away (but never the same thing consistently). But eventually the jittering will come back again. Anyone else have this problem with their Co-star? More importantly, does anyone else have a solution? Thanks!