Cannot join AD domain, net ads join returns "Strong(er) authentication required"

Solution Unverified - Updated -

Issue

Not able to join Windows 2003 R2 Domain, net ads join fails with the following error message.

# net ads join -U Administrator
Administrator's password: 
[2009/12/09 20:14:24, 0] libads/sasl.c:ads_sasl_spnego_bind(330)
  kinit succeeded but ads_sasl_spnego_krb5_bind failed: Strong(er) authentication required
Failed to join domain: Strong(er) authentication required

Environment

Red Hat Enterprise Linux 5

samba-3.0.33-3.15.el5_4.1

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