-> Tap ALT key or press F10 to show the Menu Bar

-> go to Help Menu -> select "Restart with Add-ons Disabled"

Firefox will close then it will open up with just basic Firefox. Now do this:

-> Update ALL your Firefox Plug-ins https://www.mozilla.com/en-US/plugincheck/

-> go to View Menu -> Zoom -> click "Reset"

-> go to View Menu -> Page Style -> select "Basic Page Style"

-> go to View Menu -> Toolbars -> unselect All Unwanted toolbars

-> go to Tools Menu -> Options -> Security -> place Checkmarks on:

1) Warn me when sites try to install add-ons

2) Block reported attack sites

3) Block reported web forgeries

-> Click OK on Options window

-> go to Tools Menu -> Add-ons -> Extensions section -> REMOVE All Unwanted/Suspicious Extensions (Add-ons) -> Restart Firefox

You can enable your Known & Trustworthy Add-ons later. Check and tell if its working.

Many thaks I've followed your instructions and I now have a centered page. Can you please tel me if I need Babylon 1.1.8 and the Google Toolbar for Fire fox as these are the only 2 items that had the "remove" option?

Helen

NO!! Remove them. They are main culprits for causing many problems.

Many thanks for you're quick response I'm OK now.