The fix from back on page 2 of this thread is quoted again below. I tested this and it worked perfectly for me last night...I have iWork '09 installed from the discs, so what is the plan to fix this?
Just spoke with someone at Apple and this is what you need to do:
You need to create a new user under settings, standard account type is ok and just call it test. Log out and log into new account. Go to system updates and there they are. Once completed you can delete the test account. Hope this helps