Usenet: Signing date problems - advice needed

[david.topping at gnuemail.com]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Im running on Windows XP SP2, latest IE and OE. GnuPG setup is WinPT with
GPG. For security, I'm using ZoneAlarm Security Suite.

In about 50%, when I sign and post to usenet, when anyone tries to verify
the posting, an error 'Bad Signature...signed 01/01/1970' is returned.
This happens regardless of how I post: with or without proxy (COTSE),
signing directly via the 'window', or by copying and signing the clipboard
content. The remainder of the time, the correct signing date is passed
through to usenet.

This issue does not occur with anything else.

Any ideas about how I can rectify this, please? I have already tried
unistalling, download and reinstalling the lastest softwar.e

Many thanks
- --
David Topping
david.topping at gnuemail.com
Tel: 08445 85 85 85
Mob: 07010 85 85 85
Fax: 07017 85 85 85

GnuPG Key: 0xC1550505
Available from: http://www.gnuemail.com/david.topping/

This message may contain information which is confidential or privileged.

If you are not the intended recipient, please advise the sender
immediately by reply email and delete this message and any attachments
without retaining a copy.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2.1 (MingW32) - WinPT 0.11.8

iD8DBQFEeF0kgni8FsFVBQURAkdiAKCUu+CS20g31DImUMCtZCNRDK6PvgCeOh9B
wfn9UpFAiAeL4XBq/splW+8=
=ewrW
-----END PGP SIGNATURE-----