NEW GA Google Analytics Not Tracking PROBLEM FIXED...
OK, for anyone still following this thread, here is what I have found, and what appears to have FIXED the problem.
Go to ADMIN (in the upper right corner of your GA account, - new interface).
Click on "Filters" tab. If you have a filter, get rid of it. I'm no GA expert, and am absolutely certain that I did not put a "filter" in this tab of any kind. But, best as I can figure out, when the new GA interface rolled out, someone defaulted this Filter to follow "your website only"..., but unfortunately, that website filter filters OUT everything.
Again, I don't know why, all I know is that I found a very vague reference to this on the GA forum at Google: https://productforums.google.com/forum/#!category-topic/analytics/discuss-tracking-and-implementation-issues/jA_X3W9ZBxM
Whic a tech named Whims suggested "Don't ever apply a filter to your main reporting profile"...
Why was there one there? I dunno - it was put there by Google in the roll-out of the new GA.
I suspect that all the folks on these and other forums that had this "change" suddenly happen to them between Feb and Jun of 2012, as the new GA rolled out, have this same issue.
If this fixes it for you - please post here so others can learn from what you know.
If you know how, and what to do with Filters..., that's a good topic to share too!..