Firefox updates usually hit Sid within a day or two of offical Mozilla releases, Thunderbird seems to take about a week, OO is always getting updated.
I have never seen a security bulletin that wasn't updated in Sid either already or within a day of the Debian security warning about updating.
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:220.127.116.11) Gecko/20060728 Firefox/18.104.22.168 (Debian-1.5.dfsg+22.214.171.124-4)
OO is 2.0.3-4
I dont use Thunderbird, but it is 126.96.36.199 (20060812)