Guilty

Hi, Has anyone else had the problem where the login details are filled in by the assistant but immediately disappear and you do not login? We seen this on all of our desktops but only for Joomla websites. If you autofill and click the login button very quickly before the details disappear again, you can login successfully. I'm interested in anyone that might have a solution to this. Edit - we're talking of V6 of course. No such problems until the upgrade. Thanks, G