In my case the problem is due to validation client-script (e.g. the required
field validator) broken by 1.1 sp1, so that a save button will not fire on
the client.
A save button that worked fine before i foolishly installed sp1, now will
work only if i have no client validation.
I am wondering if I should attempt to discover what is wrong with the
client-script broken by 1.1 sp1, but really MICROSOFT should fix it.