If I have several open tabs and go back and forth they disappear
When I move back and forth between websites, some pages disappear but may have video sound...no pic...
URL of affected sites
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If you have RealPlayer Browser Record Plugin extension, disable/remove the RealPlayer Browser Record Plugin extension in the RealPlayer Preferences (RP: Tools > Preferences > Download & Recording) . Restart Firefox and test.
See Noah_SUMO's illustrated answer in this thread if the above is not clear: https://support.mozilla.com/en-US/forum/1/557689?
The RealPlayer Browser Record Plugin extension adds some extra features like saving media files.
Be sure not to get confused with the RealPlayer plugin (Tools > Add-ons > Plugins) that plays media files.
https://support.mozilla.com/en-US/forum/1/557689? http://support.mozilla.com/en-US/forum/1/459823 https://support.mozilla.com/en-US/forum/1/446905? https://support.mozilla.com/tiki-view_forum_thread.php?forumId=1&comments_parentId=472596 http://support.mozilla.com/en-US/forum/1/461211 http://support.mozilla.com/en-US/forum/1/376867
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems.
Other Issues: to correct security/stability issues
Update Java: your ver. 1.6.0.06; current ver. 1.6.0.20 (important security update 04-15-2010) (Windows users: Do the manual update; very easy.) See: Updating Java Do the update with Firefox closed.
Install/Update Adobe Flash Player for Firefox: your ver. 10.0 r22; current ver. 10.0 r45 See: Updating Flash -download and SAVE to your hard drive (save to Desktop for easy access) -exit Firefox (File > Exit) -double-click on the Adobe Flash installer you just downloaded to install it -when the Flash installation is complete, start Firefox, and test the Flash installation here: http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_15507&sliceId=1
- NOTE: On Vista and Windows 7 you may need to run the plugin installer as Administrator by starting the installer via the right-click context menu if you do not get an UAC prompt to ask for permission to continue (i.e nothing seems to happen). See this: http://vistasupport.mvps.org/run_as_administrator.htm
- NOTE for IE: Firefox and most other browsers use a Plugin. IE uses an ActiveX version of Flash. To install/update the IE ActiveX Adobe Flash Player, same instructions as above, except use IE to download the ActiveX Flash installer.