up2date giving error "Unable to fetch requested Package".

Issue

• Getting the following error while trying to update thunderbird using up2date.

[root@localhost ~]# up2date -u
Fetching Obsoletes list for channel: rhel-i386-es-4...
Fetching rpm headers...
########################################
Name                                    Version              Rel               Arch
----------------------------------------------------------------------------------------
thunderbird                             1.5.0.12            33.el4 i386
Testing package set / solving RPM inter-dependencies...
########################################
error: rpmts_HdrFromFdno: MD5 digest: BAD Expected(4506a0b93d5cf9bb8d188db729fc7193) != (2bf533c9c62b0fac37134d801647160c)
thunderbird-1.5.0.12-33.el4  An error has occurred:
Unable to fetch requested Package
See /var/log/up2date for more information