Destroyed session data reappearing after redirect

[eluser]Andy Ingham[/eluser]
Many thanks for the response InsiteFX. I thought I'd replied on Friday, but mustn't have actually hit the button!

Unfortunately the 'refresh' option didn't help. I tried it on the '/login' redirect and also on the redirect to the 'master system' login, which is the one actually causing the problem.

Any further ideas greatly appreciated....