Escalated to Bugzilla from IssueTracker
Created attachment 115560 [details]
The patch removes the comparing of ports in the reply cache
which makes the cache more tolerant to rpc message on different
tcp connect but with the same xids...
A fix for this problem has just been committed to the RHEL3 U7
patch pool this evening (in kernel version 2.4.21-37.5.EL).
An advisory 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.