It may be that something that you have downloaded/installed on your system has affected your User-agent, which identifies your browser and version: *Your user-agent reported with your question post: **Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.0.12) Gecko/2009070611 '''''Firefox/3.0.12''''' (.NET CLR 3.5.30729) *See: http://en.wikipedia.org/wiki/User_Agent *Also see: **https://support.mozilla.com/en-US/kb/Finding+your+Firefox+version **http://support.mozilla.com/en-US/kb/Installing+Firefox *Download Firefox only from Mozilla: **https://www.mozilla.com/en-US/firefox/ **http://www.mozilla.com/en-US/firefox/all.html You can reset your user agent. Follow the instructions: https://support.mozilla.com/en-US/kb/Websites%20or%20add-ons%20incorrectly%20report%20incompatible%20browser <br /> ----------------------- <br /> '''Other issues needing your attention''' The information submitted with your question indicates that you have out of date plugins with known security and stability issues that should be updated. To see the plugins submitted with your question, click "More system details..." to the right of your original question post. You can also see your plugins from the Firefox menu, Tools > Add-ons > Plugins.<br /> <br /> *Adobe PDF Plug-In For Firefox and Netscape **Current versions are 9.4.2 and 10.0.1 (aka Reader X) **Info about version 10 (aka Reader X): ***New Adobe Reader X (version 10) with Protected Mode was released 2010-11-19 ***See: http://www.securityweek.com/adobe-releases-acrobat-reader-x-protected-mode *Java Plug-in 1.6.0 for Netscape Navigator (DLL Helper) **Very old. 24 updates behind **'''''Security update version 1.6.0_24 released 2011-02-10''''' #'''Check your plugin versions''': http://www.mozilla.com/en-US/plugincheck/ #*'''Note: plugin check page does not have information on all plugin versions''' #'''Update Adobe Reader (PDF plugin):''' #*From within your existing Adobe Reader ('''<u>if you have it already installed</u>'''): #**Open the Adobe Reader program from your Programs list #**Click Help > Check for Updates #**Follow the prompts for updating #**If this method works for you, skip the "Download complete installer" section below and proceed to "After the installation" below #*Download complete installer ('''if you do <u>NOT</u> have Adobe Reader installed'''): #**Use the links below to avoid getting the troublesome "getplus" Adobe Download Manager and other "extras" you may not want #**Use Firefox to download and SAVE the installer to your hard drive from the appropriate link below #**Click "Save to File"; save to your Desktop (so you can find it) #**After download completes, close Firefox #**Click the installer you just downloaded and allow the install to continue #***Note: Vista and Win7 users may need to right-click the installer and choose "Run as Administrator" #**'''<u>Download link</u>''': ftp://ftp.adobe.com/pub/adobe/reader/ #***Choose your OS #***Choose the latest #.x version (example 9.x, for version 9) #***Choose the highest number version listed #****NOTE: 10.x is the new Adobe Reader X (Windows and Mac only as of this posting) #***Choose your language #***Download the file, SAVE it to your hard drive, when complete, close Firefox, click on the installer you just downloaded and let it install. #***Windows: choose the .exe file; Mac: choose the .dmg file #*Using either of the links below will force you to install the "getPlus" Adobe Download Manager. Also be sure to uncheck the McAfee Scanner if you do not want the link forcibly installed on your desktop #**''<u>Also see Download link</u>''': http://get.adobe.com/reader/otherversions/ #**Also see: https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox (do not use the link on this page for downloading; you may get the troublesome "getplus" Adobe Download Manager (Adobe DLM) and other "extras") #*After the installation, start Firefox and check your version again. #'''Update the [[Java]] plugin''' to the latest version. #*Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE) #**'''''Be sure to <u>un-check the Yahoo Toolbar</u> option during the install if you do not want it installed. #*Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates #* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml #* Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org #*Java Test: http://www.java.com/en/download/help/testvm.xml