said by bcastner:For cases where it does not, I suspect the problem lies not in "bugs" with the DNS Hotfix, but with the nature of the change being implemented.
Indeed, if it was a bug in the fix there wouldn't be just ZA users loosing connection. In one of the posts above ZA user allowed few more ports in High settings which removed the restriction of the inbuilt rule blocking the update. It surprises me that ZA database is somehow acting abnormally in respect to the files updated this time.
Cudni