[Enigmail] No longer decrypting/verifying

[Becca Lee]

Hi,

I had Enigmail (TB 2.0.0.6, EM 0.95.3, XP SP2) working fine for a
while.  Now I get the following:

- When I have Automatically Decrypt/Verify Messages checked, EM appears
not to recognize PGP signed or encrypted messages
- When I have Automatically Decrypt/Verify Messages unchecked, the blue
message ("Possibly PGP/MIME encrypted or signed message; click Decrypt
button to verify") appears.  When I choose Decrypt/Verify, nothing
happens, except what looks like a refresh or reload of the message pane
- I am never asked for my passphrase anymore (Passphrase settings are 5
mins/Never ask... unchecked)

Other info:
- My own keypair, plus the one public key I've imported appear to be intact
- In the console and log I don't see anything that looks like an error
or warning
- Other add-ons: GMailUI, Lightning, MinimizeToTray, Provider for Google
Calendar, QuoteCollapse, Talkback, TB QuickMove Extension.  Enigmail was
the last one I added.
- enigerr.txt was created but is empty

How do I fix this, or what should I look for in the logs?

Thanks,
Becca