There's no Firefox version 9. See this:

-> Troubleshooting extensions and themes

• https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

-> Pop-up Blocker

• https://support.mozilla.com/en-US/kb/Pop-up%20blocker

-> Popups Not Blocked

• http://kb.mozillazine.org/Popups_not_blocked

Do a MALWARE check with these Malware Scanning programs. You need to scan with all programs because each program detects different malware. Make sure that you UPDATE each program to get the latest version of their databases before doing a scan.

-> Malwarebytes' Anti-Malware

• http://www.malwarebytes.org/mbam.php

-> SuperAntispyware

• http://www.superantispyware.com/

-> Windows Defender Home Page

• http://www.microsoft.com/windows/products/winfamily/defender/default.mspx

-> Spybot Search & Destroy

• http://www.safer-networking.org/en/index.html

-> Ad-Aware Free

• http://www.lavasoft.com/products/ad_aware_free.php

Check and tell if its working.

If you have problems with updating or with the permissions then easiest is to download the full version and trash the currently installed version to do a clean install of the new version.

Download a new copy of the Firefox program and save the DMG file to the desktop

• Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
• Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html

• Trash the current Firefox application to do a clean (re-)install
• Install the new version that you have downloaded

Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data.

• http://kb.mozillazine.org/Profile_folder_-_Firefox