Flash causing Firefox to lockup on sysprepped/imaged machines

     Just ran across a weird problem at the university where I work.  It seems that machines we have deployed with a sysprepped image of Windows 7 using Ghost are having an issue where the latest version of Flash causes Firefox to lockup whenever viewing a site containing flash elements.  The quirk is that is seems to be ONLY imaged machines with the LATEST flash (11.3.300.257 as of this writing).  Machine with a traditional install of Windows 7 seem to be fine.  Also, we have seen this on machines created with two completely separate image; not all off the same one.
     I have yet to run across anyone dealing with the same exact circumstance as our issues so I figured I would reach out to the bloggosphere.  Have any of you run into similar problems?  Have you found a fix/reason why?  Either way, please leave a comment to let me know I am not the only one.  The fix (work around really) is to do the following:

• Kill firefox.exe as well as the plugin-container.exe and trustedinstaller.exe (if trustedinstaller is running)
• relaunch firefox.exe (hopefully without restoring your last session to a flash enabled site) and then go to "Firefox button" --> Options --> Manage Add-Ons
• Choose to disable the Shockwave Flash 11.3.300.257 plugin (doesn't seem to uninstall properly without this step)
• Then uninstall said flash version (if you have the activex version of flash for IE installed, in my experience, it is ok to leave that on the system; problem is only for "other browsers")
• Finally, install a previous release of Flash (luckily I had one in my downloads folder).  Or, just go sans-flash until you/I/someone can find a fix :-( 

Additionally, this seems to be with any version of Firefox from 4+ (since they instituted the plugin-container.exe).   Yes, I have tried going back to previous releases on machines exhibiting this quirk to no avail.

****Update Found some correlating information that something is going wrong.  Theverge reports here: http://www.theverge.com/2012/6/19/3096183/adobe-mozilla-flash-player-11-3-firefox-crash-workaround that there is a "known issue".  However, I don't think Adobe "knows" the solution as none of the options given here: http://helpx.adobe.com/flash-player/kb/flash-player-113-crash-mozilla.html will work.


********Update to the Update: Flash 11.3 instituted a "Protected Mode" feature.  Still not a solution, as such, but a workaround is to disable this new feature following the steps recorded here: http://www.trishtech.com/internet/disable_adobe_flash_protected_mode_in_firefox.php