I report below 2 very annoying problems with the FIOS HD DVR. If you are also bothered by these 'features' and want them remedied, please chime in with your complaint so we can get the FIOS folks to fix it.
PROBLEM 1.
When a live broadcast is paused for a long time (so that the internal playback buffer is filled), playback doesn't then resume from the point at which you paused but instead takes you forward all the way to the current live point! So you then have to rewind 18 minutes or so to get back to your previously paused position and of course while doing so, you lose a few seconds of what you were watching.
The desired behavior should be to always resume exactly at the point at which you are paused. (Better yet -- the DVR should not be constrained by the 18 minute buffer and ought to temporarily write to any unused disk space. That used space would be immediately released as needed for new recordings.)
PROBLEM 2
When a recorded program is paused for a relatively long time -- which is not very long at all -- the record menu pops up and the currently tuned channel starts playing in the background! So say you get a phone call and you pause a recording you are watching. While you are on the phone, all of a sudden the TV comes back on and you have to quickly run over and mute it.
The desired behavior should be to either do nothing (and stay paused) or display a screen saver -- silently!