Thanks to all you lot who helped... Anyway, I've tracked the problem down - for some reason, the company mail system is base64-encoding the encrypted part of the mail before delivering it into my mailbox. Bizarre.
A quick wrapper script around GPG, and it's all fixed. -- David Smith Tel: +44 (0)1454 462380 (direct) STMicroelectronics Fax: +44 (0)1454 617910 1000 Aztec West TINA (ST only): (065) 2380 Almondsbury Home: 01454 616963 BRISTOL Mobile: 07932 642724 BS32 4SQ Work Email: [EMAIL PROTECTED] Home Email: [EMAIL PROTECTED]