After applying KB2677070, the System Center Data Access Service may have a problem starting due to a Timeout error.
There is a workaround described in the KB article noted here to unblock the updated URLs in the firewall or proxy or disable CRL checking for the Data Access Service. This involvews modification of the Microsoft.Mom.Sdk.ServiceHost.exe.config file.
The updated URLs are:
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab