Hey Vertigineux,
The latest patch actually didn’t make any change to parental controls or the voice chat service to my knowledge. Parental controls are intended to not allow the use of the voice chat in all of our games, but will not make a client software change to fully disable it. I’m not sure that I would want a browser based check box to be able to alter coding or deny an entire client component on my system in the first place, personally.
The client voice chat function currently works in the exact same method that it did prior to this interaction. Many security programs have difficulty identifying updated versions of the World of Warcraft client as an already known entity though, and their definitions can cause weird things to happen like this.
I understand your frustration with not wanting to further configure software, but we cannot plan for every variation of every definition in every security program in existence to guarantee this won’t happen. We do want to help though, but the solution here is to configure or disable those security measures until the security software is updated.