I just did an automatic update for the Sociable plugin from the WordPrss dashboard (Version: 5.12). Oops! I have Sociable Pro. I have emailed tompokress@gmail.com about this as the automatic upgrade replaces the Pro version. Perhaps there should be a checkbox to do the Pro version upgrade, too.
I heard very promptly from Tom and he provided instructions about how to upgrade: simply login at wpplugins.com an download the latest PRO versions. Also, I should have posted this under [Plugin: sociable for wordpress 3.0]. After downloading, unziping, and uploading the latest PRO version, everything is up to date.