Difficulty in running the sample client and server

[Phil Frost]

As part of my quest to get OpenLDAP to authenticate via Kerberos, I'm 
following the steps (roughly) here: 
https://help.ubuntu.com/community/Kerberos

I'm stuck at the bit where the SASL installation is tested with the 
sample server and client. I'm using the version included in Ubuntu 
10.04.2: 2.1.23.

Here's what happens:

$ sasl-sample-server -m GSSAPI -s ldap
Forcing use of mechanism GSSAPI
Sending list of 1 mechanism(s)
S: R1NTQVBJ
Waiting for client mechanism...

meanwhile... (the S:... i've pasted)

$ sasl-sample-client -s ldap -n thebe.bitglue.com -u bob
service=ldap
Waiting for mechanism list from server...
S: R1NTQVBJ
sasl-sample-client: Decoding data from base64: another step is needed in 
authentication

I've also tried not forcing GSSAPI:

$ sasl-sample-server -s ldap
Generating client mechanism list...
Sending list of 7 mechanism(s)
S: R1NTQVBJIE5UTE0gRElHRVNULU1ENSBMT0dJTiBQTEFJTiBBTk9OWU1PVVMgQ1JBTS1NRDU=
Waiting for client mechanism...

$ sasl-sample-client -s ldap -u bob
service=ldap
Waiting for mechanism list from server...
S: R1NTQVBJIE5UTE0gRElHRVNULU1ENSBMT0dJTiBQTEFJTiBBTk9OWU1PVVMgQ1JBTS1NRDU=
sasl-sample-client: Decoding data from base64: bad protocol / cancel

It seems to me that if it can't even get past sending the list of 
mechanisms I must be doing something very wrong, but I have no idea 
what. Can anyone please provide a hint?