Strange warning: "this cipher algorithm is depreciated"

[Steven E. Harris]

If I create a new key and accept all the defaults, I get a strange
warning whenever I encrypt to the new key:

,----[ create a key - accept defaults ]
| $ gpg --gen-key
| gpg (GnuPG) 1.0.4; Copyright (C) 2000 Free Software Foundation, Inc.
| This program comes with ABSOLUTELY NO WARRANTY.
| This is free software, and you are welcome to redistribute it
| under certain conditions. See the file COPYING for details.
| 
| Please select what kind of key you want:
|    (1) DSA and ElGamal (default)
|    (2) DSA (sign only)
|    (4) ElGamal (sign and encrypt)
| Your selection? 1
| DSA keypair will have 1024 bits.
| About to generate a new ELG-E keypair.
|               minimum keysize is  768 bits
|               default keysize is 1024 bits
|     highest suggested keysize is 2048 bits
| What keysize do you want? (1024) 
| Requested keysize is 1024 bits   
| Please specify how long the key should be valid.
|          0 = key does not expire
|       <n>  = key expires in n days
|       <n>w = key expires in n weeks
|       <n>m = key expires in n months
|       <n>y = key expires in n years
| Key is valid for? (0) 6m
| Key expires at Mon Aug  6 10:59:30 2001 PDT
| Is this correct (y/n)? y
|                         
| You need a User-ID to identify your key; the software constructs the user id
| from Real Name, Comment and Email Address in this form:
|     "Heinrich Heine (Der Dichter) <heinrichh@duesseldorf.de>"
| 
| Real name: Steven E. Harris
| Email address: steven.harris@tenzing.com
| Comment: Work - Tenzing                 
| You selected this USER-ID:
|     "Steven E. Harris (Work - Tenzing) <steven.harris@tenzing.com>"
| 
| Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O
| You need a Passphrase to protect your secret key.
| 
| [...]
| 
| public and secret key created and signed.
`----

Now, if I encrypt a file, I get warned that "this cipher algorithm is
depreciated." Should that be "deprecated?" Anyway, check this out:

,----[ encrypt a file - note "depreciated" warning ]
| $ gpg -v -a -e -r steven.harris@tenzing.com temp/jde-helpers.el 
| gpg: key 3A976CE5.93: Good subkey binding
| gpg: uid 4E75F921.93: Good self-signature
| gpg: This key belongs to us
| gpg: reading from `foo.txt'
| File `foo.txt.asc' exists. Overwrite (y/N)? y
| gpg: writing to `foo.txt.asc'
| gpg: ELG-E/RIJNDAEL encrypted for: 3A976CE5 Steven E. Harris (Work - Tenzing) <steven.harris@tenzing.com>
| gpg: this cipher algorithm is depreciated; please use a more standard one!
`----

I'm using gpg 1.0.4. Should I be worried by this warning?

-- 
Steven E. Harris        :: steven.harris@tenzing.com
Tenzing                 :: http://www.tenzing.com