can not decrypt file suddenly

[jason zhang]

I have a encrypted file in Fedora 15 system.
I have decrypted the file repeatedly many times for two years.

Today, I could not decrypt it suddenly.
Here is what a decrypt session looks like
------------------------------------------
/usr/local/bin/gpg j.gpg
gpg: CAST5 encrypted data
gpg: encrypted with 1 passphrase
gpg: decryption failed: bad key
------------------------------------------

I reboot my machine several times. I updated gpg from 1.4.12 to 1.4.19. But
I still cann't decrypt my file.

Help is really appreciated.
This is an important file. That is why I encrypt it.


Thanks

-- 
-jiesheng
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