I just had a notification from Secunia PSI that a new version of Flash Player was installed. On checking in the Control Panel I noticed that ActiveX version was 11.3.300.270, but the Plug-in version was still 11.3.300.268, so I ran the uninstaller and went to adobe.com to download each and I am back on 11.3.300.268 for both.
I will guess a new Flash Player may be out soon.
Dave.
Edit ::: Here is an announcement