[Enigmail] Problem decrypting messages

[David Caplan]

Hi there,

I'm a newbie with OpenPGP, and I'm hoping Enigmail can help me secure my
correspondence while minimizing my opportunities to screw up the
encryption/decryption process.

I've installed OpenPGP 1.4.9 and Enignmail 0.95.7 on my PC that runs
Thunderbird 2.0.0.19 on Windows XP SP3.

Installation seemed to go well, I created a passphrase and key pair, and
I published my public key to the default servers.

To verify that all was well, I sent an encrypted email message to the
automated Adele server in Germany (adele at gnupp.de) with my public key as
the text.  It replied with a message that, once I typed in my passphrase
to view it, contained my public key as the text.  So far so good.

However, Thunderbird also displays a message at the top of the received
email stating:

"OpenPGP: Part of the message encrypted; click Key icon for details."

When I click the Key icon, the following error message pops up:

"OpenPGP Security Info

Error - secret key needed to decrypt message

gpg command line and output:
C:\\Program Files\\GnuPG\\gpg.exe --charset utf8 --batch --no-tty
--status-fd 2 -d --passphrase-fd 0 --no-use-agent
gpg: encrypted with RSA key, ID 2BFD503F
gpg: decryption failed: secret key not available"

I've spent hours trying to determine what I'm doing wrong, but to no
avail so far.  Can anyone please help me out?

David