I noticed the other day that the NIS 2010 UI stated that LiveUpdate had not ran for 7 hours. I investigated and discovered that it definitely had not ran during that time and no full or pulse updates had been downloaded. I noticed in the notification area that the icon was showing the quiet mode icon (pic below), however, no TV recording had been running, no full screen programs had been running and no disk burning was taking place.
The history log (unhelpfully) stated that TV recording had finished but quiet mode was still on due to other programs running. However, it did not tell me what programs were running which would cause this. I switched the disable switch for quiet mode in the UI and re-enabled it again, in fact I tried all the options with no result. At this point I just left it and did something else, thinking that it would sort itself out sometime soon. I didn't take any notice of whether it did or not, as I had installed something which required a reboot so the reboot would have reset it anyway.
So, today, I noticed again, LiveUpdate had not been ran for 7 hours, since 1512 today actually. So, I ran them manually and there was 4 updates. Again, I noticed that NIS was in quiet mode, no TV recording in progress, no disks burning, no fullscreen...you can see there is a pattern emerging here, which I did not notice with any of the beta builds so it's looking like a possible regression in build 136.
I'm going to leave it alone and switched on this time, to see if and when it corrects itself. I did think about contacting Norton Support to report this issue, but figured it would be better to do it on here to see if anyone else has had this issue.
Ideally, I would like to find out what is causing it, so please don't reply with 'reboot and it will be fine' as that is not a solution and it will only be fine until it does it again, this is a bug and it requires addressing.
Anything that Symantec need from my box to fix this, you can have it.