Several users have reported issues when using Flash Player 11.3 with Mozilla Firefox 13, both of which were released within a few days of one another earlier this month. We’ve been working closely with Mozilla to diagnose and resolve these issues, which had different causes.
Mozilla last week blocklisted the RealPlayer Browser Record Plugin, to resolve problems it was causing with the interaction between Firefox and Flash Player. Mozilla has also released Firefox 13.0.1 to address a second issue.
We continue to work closely with Mozilla to further improve pre-release testing to more reliably catch issues like these. Please report any other issues you may experience together with reproducible steps here.