Using GPG4win 1.0.7, Win XP SP2, Outlook 2003 SP2

Email options switched completly to text messages.

If the email body contains just a letter (A or B) the PGP signature
ist destroyed in the following way:

Body contains just an A:
---Start---
-----BEGIN PGP SIGNED MESS
A
GE-----
Hash: SHA1

A
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (MingW32)

iD8DBQFFPinIFC/FD7lzSq8RAodtAKC33RNU+S+Hs4fWdmkL8A1zubaUzwCg3Dn8
kggPdslwsIceITVrK84FYpQ=

sHkg

-----END PGP SIGNATURE-----
---End---

Body contains just a B:

---Start---

B
EGIN PGP SIGNED MESSAGE-----
Hash: SHA1

B
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (MingW32)

iD8DBQFFPioTFC/FD7lzSq8RAlDXAJwO2T8yOeRJb/Iu/e/MqB7oh2LHLwCgwPol
IZ0Y2XbIkf8iF+H1WY7iPag=

FXdV

-----END PGP SIGNATURE-----
---End---