In our statistical data for MS08-067 we see it being patched at about the same rate as other critical patches. Over 50% of all machines are patched after approximately 30 days. After that period we see the patch rates go down and the overall number of machines that are attackable only slowly diminishing. Unfortunately this leaves enough machines to be exploited by the "Conficker" worm types even today, over 45 days later.
We would have liked to see a faster reaction by the computer users given the significance of the patch but there still seems to be a barrier to reach everybody and make them understand the urgency of patching.