Mac client is broken

About half the time since the last three patches, the mac client will not load games onto summoner's rift. I keep getting the firewall error. I am certain that there is not a firewall issue. For such an enormously popular game to be so full of issues that it is unplayeable half the time is utterly unacceptable.

Riot, I will not spend another cent on this game until you fix the issues with your client. It is horribly broken and you owe it to your customers to provide them with a stable game.