Yes, you can indeed have separate extensions and data and settings available to each separate user. To have different settings and extensions would be to create two separate profiles for each of you. To create another one see Managing Profiles

Hope this helps!

Thanks Moses Firefox Support

Also I see that you are using Flash 10. I recommend upgrading to 10.1 by going to http://get.adobe.com/flashplayer

Other Issues: ~~red:You have installed plug-ins with known security issues. You should update them immediately.~~

Install/Update Adobe Reader for Firefox (aka Adobe PDF Plug-In For Firefox): your ver. 8.2.3; current ver. 9.3.3 (important security update release 06-29-2010; see: http://www.adobe.com/support/security/bulletins/apsb10-15.html) ~~red:Check your version here~~: http://www.mozilla.com/en-US/plugincheck/ See: http://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox#Installing_and_updating_Adobe_Reader You may be able to update from the Adobe Reader installed on your system instead of going to the Adobe site and downloading. Start > Program Files, find and click Adobe Reader to open, click Help, click Check for Updates. If you go to the Adobe site to download the current Adobe Reader: -use Firefox to download and SAVE to your hard drive (save to Desktop for easy access) ~~red:-See the images at the bottom left of this post to see the steps to take on the Adobe site~~ -exit Firefox (File > Exit) -check to see that Firefox is completely closed (Ctrl+Alt+Del, choose Task Manager, click Processes tab, if "firefox.exe" is on the list, right-click "firefox.exe" and choose End process, close the Task Manager window) -double-click on the Adobe Reader installer you just downloaded to install/update Adobe Reader

• 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. To install/update the IE ActiveX version, same instructions as above, except use IE to download the ActiveX installer.
• Also see: http://kb.mozillazine.org/Adobe_Reader ~~red:AND~~ How do I edit options to add Adobe to the list of allowed sites

Separate WinXP Logon User Accounts would do a better job of keeping data separated for both users.

http://www.microsoft.com/windowsxp/using/setup/winxp/accounts.mspx

You would then have separate Firefox user Profiles automatically.

Thanks for the prompt replies. However, we do have separate Firefox profiles, and indeed separate WinXP accounts; but when I installed LastPass, it appeared for my wife too, and stopped her from using her Firefox-saved passwords, at least until she disabled it. Now she's wary of letting me add anything else!

When you installed LastPass do you recall if you installed it directly in to Firefox from this page? https://addons.mozilla.org/en-US/firefox/addon/8542/ Installed as a Firefox extension via an XPI file, it would have / should installed to only one Firefox Profile.

Or did you use a Windows installer executable and install it into Windows? If so, it may have been installed into any Firefox Profile, existing or new.

You might want to ask about that in the LastPass support forum. http://forums.lastpass.com/