See bug 126775 for a description of the problem and a patch. We need the updated package in AS2.1 as well.
Fixed in ncompress-4.2.4-37 in AS2.1-errata-candidate ncompress-4.2.4-38 in 3.0-U3-HEAD Apologies for the delay.
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2004-536.html