up2date problem

[Bryan Elliott]

Hi all I have a RedHat 2.1 AS box that is giving me some problems with 
up2date. When I try to run up2date -l I get the following errors any 
ideals on how to take care of this? Thanks

[root at mybox root]# up2date -l
Traceback (innermost last):
  File "/usr/sbin/up2date", line 839, in ?
    main()
  File "/usr/sbin/up2date", line 627, in main
    pkgNames, fullUpdate, dryRun = dry_run))
  File "/usr/sbin/up2date", line 782, in batchRun
    batch.run()
  File "/usr/share/rhn/up2date_client/up2dateBatch.py", line 57, in run
    self.__findPackagesToUpdate()
  File "/usr/share/rhn/up2date_client/up2dateBatch.py", line 89, in 
__findPackagesToUpdate
    plist.run()
  File "/usr/share/rhn/up2date_client/packageList.py", line 85, in run
    self.addObsoletePackages(obsList)
  File "/usr/share/rhn/up2date_client/packageList.py", line 111, in 
addObsoletePackages
    if len(obsoletePackages) == 0:
TypeError: len() of unsized object