As far as I can tell there have not been any updates to IE9 since the 18th March.
My version is 9.0.8112.16421 last update ver KB982861 (my OS is windows 7 64 bit, there may be a different v number for 32 bit.)
edited to add: it was actually installed on the 30th March on my system.
Last edited by green granite; 13th May 2011 at 12:53.