Jason
I have been testing this on a number of different PCs (as stated in my original post) I am also testing it in different locations (home and office - both have no "network" to speak of - just PC connected direct to a broadband router. I have also tried clearing the browser cache (session & domain) and cookies (session & domain) but I still get this problem.
As I stated originally, this used to work until the recent SU4 upgrade. Have you tested this yourself?
FYI I am using a P plan site.
Solution needed soonest please.
Thanks
Chris