Insane CPU utilization at login

Mac Technical Support
Aside from the fact that I can't even make a connection to to authenticate my game, so I have a 12gb $100 piece of crap, while SC2 sits around thumbing its' nose at and not connecting, it takes 160-180% CPU - effectively bringing my entire computer to a halt.

Here's a screenshot:
A bit more investigation - this is literally driving my CPU so hard that it actually kills my network interface, which is why it can't connect. Packet loss on my network interfaces is near 100% at the login screen to SC2 with both cores pegged. Once I quit SC2 everything goes back to normal.

I want my money back.
That just happened to me.

You must turn the firewall settings on. And allow SC2 connection.
Follow this link, I think it will solve your problem.

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