Thanks - I shall have a look at the Scriptlogic site - I didn't spot the BBS before.

Re: AntiVirus - We use McAfee Virus Scan on Clients, VirusScan TC on Citrix Servers (these seem to be unaffected) and NetShield on Servers. All are updated with the latest definitions automatically. Is McAfee a known problem causer? We have been using it for years and Kix for about 12 months without problem.

Regards

Terry