Try turning off your caller ID when doing your OTA scan. I haven't had a problem at all like what you're describing. But then I haven't had an incoming call while doing a scan.
Clear out all of your OTA stations and save. Do a soft reboot and then rescan. Some of the DTV stations have new PSIP software that the 811 needs to relook at. Channel 46 is probably the actual channel for that DTV local and 14 is the virtual. This little reboot session seems to work for that kind of a problem. It could well be that your local has the PSIP turned off as well.
Clear out all of your OTA stations and save. Do a soft reboot and then rescan. Some of the DTV stations have new PSIP software that the 811 needs to relook at. Channel 46 is probably the actual channel for that DTV local and 14 is the virtual. This little reboot session seems to work for that kind of a problem. It could well be that your local has the PSIP turned off as well.