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:18.104.22.168) Gecko/20060728 Firefox/22.214.171.124 (Debian-1.5.dfsg+126.96.36.199-4)
OO is 2.0.3-4
I dont use Thunderbird, but it is 188.8.131.52 (20060812)