Setting to 5.1.z?

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.

http://rhn.redhat.com/errata/RHBA-2008-0148.html

*** Bug 432573 has been marked as a duplicate of this bug. ***

I request a re-opening of this ticket for the following reasons...

1. This issue is not closed because the newly released version of thunderbird,
   1.5.0.12-9.el5_1, does NOT fix the problem.  I can still crash thunderbird
   by openening multiple Compose windows and then closing them.

2. As auerbach pointed out, this problem exists on rhel4 as well.

confirming what K.Scott Rowe notes:

1.5.0.12-9.el5_1 still crashes as described.

RH4 version: thunderbird-1.5.0.12-8.el4 crashes under same circumstances. We are
downgrading users to thunderbird-1.5.0.12-7.el4 to work around this issue.

Please fix.

Then I suggest that is a different crash and deserving of a different bug. 
RHEL4 was not affected by the linker error that we corrected with this bug and
advisory.

Bug 432573 noted this issue from the get-go occurring also on RH4 yet you marked
it as a duplicate (Comment #9). 

https://bugzilla.redhat.com/show_bug.cgi?id=432573

so, maybe just reopen that one...