One problem though if anyone knows how to fix it. I use a lot of forums and am constantly using the back button to switch between threads and forums. IE used to refresh the page when the back button was pressed so that I could instantly see new posts and threads. However firefox does not do this and I am having to manually refresh the page each time.

Is there a setting to fix this please. (still finding my way around the program.)
There is one: open a new tab and enter in the URL
about:config
press enter

Browser recommendations wanted-capture.jpg

as filter you use browser.cache
look for the line browser.cache.check_doc_frequency
the standard value = 3
The key can have the following settings:

0 : Once per session
1 : Each time
2 : Never
3 : When appropriate/automatically

so double click that line and change it to 1

close that tab, restart Firefox that should do it

-DG