On 06/07/13 14:44, Chris Walker wrote: [Snip]
So any ideas on what I can do to remedy the problem please?
Just a stab in the dark. Try creating a new user. Log on as that user, and see if their settings "stick". If they do, start using that user (unless there's a reason why not to). You can copy the files to the new home directory and change their ownership with chown. Once you've done that, you can delete the old user, and change the name of the new user to the old user's name.
Otherwise, are any of your files read-only that shouldn't be? Presumably you can save files and edit them in your home directory, or subdirectories thereof? Your home partition isn't mounted read only or anything daft like that?
HTH Steve