Sigh 4 others here
I assume you have the builds as mentioned here. MY wife's PC works fine so the update is clashing with somethiong either software or hardware that is installed on the PC..
Try resetting firewall to defaults then run MVt teh virtual technician here
If that does not help contact support and complain as the more complaints the faster they will more. I have contacted my tech contacts as well. . Best to post further posts in that thread as you seem to have the same issue.