I do updates manually (and have no problems) but what you can always do is allow approx 10 days from the wednesday (UK time) when they are released, giving sufficient time for them to be pulled if faulty.
I've seen that issue once on a Windows Vista machine and that was when I removed power from a machine in the middle of it updating, I think it took about 20 minutes to sort itsself out and it did require a restart more than once.
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Zen 8000 Active