CentOS Errata and Security Advisory 2007:0723
https://rhn.redhat.com/errata/RHSA-2007-0723.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390:
updates/s390/RPMS/thunderbird-1.5.0.12-0.3.el4.centos4.s390.rpm
s390x:
updates/s390x/RPMS/thunderbird-1.5.0.12-0.3.el4.centos4.s390x.rpm
https://rhn.redhat.com/errata/RHSA-2007-0723.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390:
updates/s390/RPMS/thunderbird-1.5.0.12-0.3.el4.centos4.s390.rpm
s390x:
updates/s390x/RPMS/thunderbird-1.5.0.12-0.3.el4.centos4.s390x.rpm