Once the updates were installed and the computer rebooted, all my
Application Pools were in "stopped" state with "unspecified error" as
description. Of course, all sites hosted on this server came back with
"service unavailable" page. I uninstalled four out of seven updates, 955759,
973917, 973904 and 976325 (IE8), and the sites came back online.
I opted to remove only KB973917 (as described at
http://thecrmgrid.wordpress.com/2009/12/09/windows-update-killed-my-app-pool/) and now the server is working fine.
I don't understand why our default, basic installation should have had a
problem with this install, though I haven't investigated it properly yet...
Application pool 'ASPNet1.1 App Pool' is being automatically disabled due to
a series of failures in the process(es) serving that application pool.
A process serving application pool 'ASPNet1.1 App Pool' terminated
unexpectedly. The process id was '3264'. The process exit code was
'0xffffffff'.
etc...
Fixed by uninstalling KB976325 then KB973917. I probably didn't have to
remove KB976325 but did because of a warning displayed when attempting to
remove KB973917 directly. I reapplied 976325 after removing 973917 and it
didn't cause a problem.
I have reapplied SP2 as suggested (without removing KB973917) and now my
websites are working.
--Jeff