I updated Flash Player to 13.0.0 on Mac OSX and the installation was verified.
Old versions have been uninstalled.
There is no lack of space on HD.
I have rebooted serveral times.
Still Flash doesnt work on Firefox nor Safari.
What to do?
Even if you're not seeing the "plug-in failure" error, take it back to 12 until they get the bugs worked out of 13.
Retrieving data ...