Install this add-on which will allow you to switch the User Agent to IE8 without having to close Firefox: User Agent Switcher

There's an animation on the developer's site which illustrates how it works.

If you're not quite sure what a 'user agent' is, take a look at this site: http://whatsmyuseragent.com/

The main problem here in a nutshell is that Tiscali hasn't updated their email client to work with Firefox 4.0

thank you for your response. I added User Agent Switcher and using default agent clicked the IE 8 but still cannot access my tiscali inbox?

Sorry, I omitted to add you to my email responses.

Do you get an error message when you try to access your Tiscali inbox?

yes, it just says 'you have undefined emails'?

OK, try doing this please.

In the location bar at the top, type: about:config and hit Enter.

In the filter at the top, copy/paste the following: general.useragent.override This will display a blank page.

Right click anywhere in the blank area and choose "New" and then "String". In the dialog box which appears, copy/paste general.useragent.override again and click OK. The dialog box will remain on screen, but you'll see that name appear above where it previously said "Enter Preference Name".

Next, copy/paste the following: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0

Click OK and then go to File | Exit. Restart Firefox again and try and login to Tiscali.

I've uploaded a screenshot for you to illustrate the steps above.

I inadvertently gave you the wrong string yesterday. We're trying to make Tiscali think you're using the previous version of Firefox which it worked with. So the version number should have been 3.6.16 at the end instead of 4.0

Sorry folks, but the solution to use 4.0 in the post above this one is correct. Hope it doesn't confuse anyone.

hello Xircal, i have just used the original string using 4.0 you gave me and it worked okay so I can use the email with that figure? thank you for your support and guidance really appreciate your help. cheers Ladadd

If it works, then OK, I was right the first time. I thought about it last night and came to the conclusion it couldn't be correct which is why I amended it this morning. Oh well...

using 4.0 also worked for me - thanks for your solution

Brilliant! Many thanks - your remedy has corrected the TalkTalk/Tiscali problem brought on by a recent Firefox upgrade.

Absolutely fantastic - i have been suffering mail problems with tiscali and firefox F O R E V A and now i am free. Thank you .. you da maan!