I am experiencing audio and video glitching, with both dropping out every 15 seconds or so, while watching MASN2HD on channel 501. So far I've only noticed it while MASN2 is on 501 - I can't say whether Fios1 HD is also glitching. MASN2 SD on channel 1 does not have the same problem. I've experienced this on multiple TV sets. I tried powering off the DVR/STB with no change.
I was going to try resetting them through Verizon.com, but it gives me an authentication error whenever I try.