How Much Time Do You Spend Mapping Digital Channels?

[recordit]

I live in SJ California and Comcast has finally acted on their elimination of the upper analog channels to make room for more digital content.

I've attempted to map QAM digital stations before and have had some success but it took quite a while just to do that. Last night I spent about 4hrs going through about half of the scanned stations and mapping some to known Comcast equivalent station ID's and some seem to be duplicates while others I've not yet had enought time to fully ID and half I haven't even had a chance to scan through yet.

Does everyone else have to spend the same amount of time to map issues as I do? If so, how long has it taken?

I've also noticed that since I last attempted, at least 2 stations are now using a different frequency than before. Will this be an expected re-occuring task that must be performed to stay in sync with Comcast and other providers?