We use a script to install Adobe Flash Player updates using the .msi version of the installers. The current .msi file on the Adobe distribution site installs the previous version. The .exe version work file but our script requires the .msi version. It's been available for over a week now but as of this morning (12/17/12) it stall installs the wrong version.
The MSI installers are uploaded at the same time as the EXE installers. Make sure that you don't "download" a cached version from somewhere in your corporate network.
P.S. check the digital signatures in the MSI; they should have a timestamp of November 30.