Picasa hangs while manually adding people face tags
Google Picasa started freezing while manually adding people face tags. Difficult to say when exactly it started as I wasn't using this feature for a while and Picasa by default updates automatically in the background. When I noticed the issue the version of Picasa was 3.9.137 (Built 81).
The freeze was not permanent, but I had to wait for a minute or so for the application to become responsive again. This made the manual face tagging not really practical. Task Manager wasn't showing any unusual system activity during the time when Picasa was "frozen".
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