From now on, expect to wait a long time for updates. Sometimes many hours. That is now normal.
I don't understand why you find this acceptable?
It never has been normal for updates to take several hours (as others have commented) so why is it acceptable for this to become normal now?
BTW not all W7 PCs are taking hours - I have a 64-bit one that updated normally in a mater of minutes yesterday, but two others, both 32-bit, have taken hours to find the updates and hours more to install them.
That makes me wonder if there is some selection going on in the WU servers that keeps 64-bit (newer, business) W7 PCs updating as usual by slowing down 32-bit (older, private) W7 PCs updating?
Can anyone else comment on the relative speeds of W7 32-bit vs. 64-bit updating this month?