I will send you a link if necessary, but it is not recommended to use Firefox 8. Firefox 8 is not supported and not secure, you will increase s the risk to your personal data and computer system.

What is the toolbar that is not compatible? has that any updated version available?

See also installing a previous version of firefox
Note for a short while Firefox 3.6 remains supported.

It is a toolbar from TDS Telecom. I think it is called TDS Telephony toolbar. Not in the office at the moment so I don't have the exact name. We are currently using FireFox version 4. Is this a secure version? Would you suggest that we down grade to 3.6? Prefer not to since we like alot of the new features in 4.0. Thanks very much for your help.

The toolbar is managedIP Assistant Toolbar or Telephony Toolbar. It is a bit confusing. They call it the former but it is listed as the later in the Add-Ons manager of FireFox.

Firefox 4 is not considered secure.

I am sure your IT Department will be aware of all this but the situation is as follows

• Firefox now has a fast release cycle
  • one version is the Release, currently Firefox 10.0.2, and version changes may be expected every 6 weeks
  • the next versions progress through Nightly, Aurora, and Beta each normally for six weeks before becoming the Release version
  • for a transitional period Firefox 3.6 is still being supported
• an ESR Extended Support Release is being made available for corporate use, initially this will be bases on Firefox 10, and the support will cease for 3.6
  participating corporations see https://wiki.mozilla.org/Enterprise#How_to_Participate_and_Post
  • general info http://blog.mozilla.com/blog/2012/01/10/delivering-a-mozilla-firefox-extended-support-release/

Because it may be expected every release will contain security updates and fixes to stay secure you should idealy as a private individual use at least Firefox 10, and in a few weeks its successor firefox 11. Just at the moment Firefox 3.6 is also supported.

• as previously mentioned see Install an older version of Firefox

Some corporations willbe switching to ESR.

You are probbaly best asking advice from your IT department. They may for instance say it is ok to use Firefox 8 behind a corporate hardware firewall and provide support for bare metal restores of laptops from secure servers.

We are a small company so I am pretty much the IT dept. Please send me a link for version 8. I think we are better off using it than version 4. Thanks for your help.

It is possible to install multiple copies of Firefox as long as separate folders are used and separate profiles, but that is considered advanced, a much easier method of using a couple of different versions is to install Firefox portable as an additional browser.

• use http://portableapps.com/apps/internet/firefox_portable

If you do use Firefox 8 for work purposes, it may be worthwhile also installing Firefox portable of the latest version, and use that for everything other than whatever uses the Telephony toolbar.

I think we will try multiple versions first. Please send me the link for 8.0.1 . I think this was the most upto date version 8.

I uderstand the caveats of using older versions but I don't understand the pedantic reply of "I won't tell you." I think the final call is the user.

I'm not sure if it is complete but I found a tremendously long list of all (??) downloadable versions: https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/

I did provide the thread owner with the correct link. (Because I know from the system info aside what the thread owner would be likely to require).

I personally do not post the links directly in the forum on the grounds that the forum is indexed by search engines and so the links may become widely publicised but without any warnings.

Anyone may use any Firefox version that they wish. Using unsupported insecure versions increases risks to personal data, and the computer system itself. Currently links to older versions are being provided officially see installing a previous version of firefox

You make a good point, John99. It still seems like it shouldn't require that much effort, though I don't know how to satisfy both concerns.

In my case I upgraded to 10 and immediately my performance went to hell. (The details are too boring but I'm talking about my old PS/2 running Windows 3.1 getting on AOL via 9.6kbs dialup looking blazingly fast.) I'm sure it has to do with my Windows 2000 with 368MB RAM running at about 500MHz but my previous version was not near as bad, and I want to go back to it.

You can also use the Add-on Compatibility Reporter to install old add-ons with current versions of Firefox, to check yourself whether they are compatible.

to get security updates for the browser in the future (on a system that isn't supported by microsoft anymore), mozilla recommends to switch to opera.

Firefox no longer works with Windows 2000

www.mozilla.org/firefox/all-older.html

If Firefox doesn't work with Windows 2000 Mozilla ought to say so. However, if one checks the system requirements on the Firefox site (not particularly easy to do) Windows 2000 is shown under Versions 7, 8, 10, and 12 (and probably all the others -- I just didn't check.).

Though maybe some versions don't work well and maybe that should be shown along with the standard warning about security and loss of data with older versions... (like there's no such risks with Firefox 12 or Windows 7 -- Sorry, couldn't resist.)

The upcoming Firefox 13 release is the version that drops Windows 2000 support:

http://www.mozilla.org/en-US/firefox/13.0/system-requirements/