A new thunderbird package is available for Slackware -current to fix two possible security issues. This package may also be used on many older versions of Slackware (though we're not certain how far back...)

More details about the issues may be found here:
http://www.mozilla.org/projects/security/known-vulnerabilities.html#thunderbird

Here are the details from the Slackware -current ChangeLog:
+--------------------------+
xap/mozilla-thunderbird-2.0.0.4-i686-1.tgz: Upgraded to thunderbird-2.0.0.4.
This upgrade fixes two possible security bugs.
For more information, see:
http://www.mozilla.org/projects/security/known-vulnerabilities.html#thunderbird
(* Security fix *)
+--------------------------+


Where to find the new package:
+----------------------------+

HINT: Getting slow download speeds from ftp.slackware.com?
Give slackware.osuosl.org a try. This is another primary FTP site
for Slackware that can be considerably faster than downloading
from ftp.slackware.com.

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating additional FTP and rsync hosting
to the Slackware project! :-)

Also see the "Get Slack" section on http://slackware.com for
additional mirror sites near you.

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/xap/mozilla-thunderbird-2.0.0.4-i686-1.tgz


MD5 signature:
+------------+

Slackware -current package:
6b9ffb3b101315cb4178a23a9ecae109 mozilla-thunderbird-2.0.0.4-i686-1.tgz


Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg mozilla-thunderbird-2.0.0.4-i686-1.tgz


+-----+

Slackware Linux Security Team