A complete clean minecraft version (1.4.4) wont get past the Mojang screen.

*What I expected to happen was...:
that it would load the game.

What actually happened was...:
It starts, I click on "log in" , then it shows an instant the load screen (brick/dark background, green loading bar), then it turns to the screen where it shows the Mojang logo. The game doesn't crash. But it just keeps showing the mojang screen.

Minecraft proces info when it shows mojang screen:

• PID: 48904
• Process Name: Minecraft
• %CPU: 0,1
• Threads: 30
• Physical memory: 172,3 MB
• Type: Intel (64-bits)

Steps to Reproduce:
1. Delete ALL minecraft files on a macbook pro.
2. (re)download the client.
3. download all the game files.
4. Start, log in, you only get mojang logo.

Side note:

Minecraft also didn't work last update (1.4.2) , it would normally go to the menu screen. But when i tried to open a world (single player) or create a new (single player) game, it said "converting world" it didn't show a loading bar, and the game completely crashed. I needed to use a force shutdown of the process. When i tried to load a server it would just crash. If it is any help I attached the crash reports i have from minecraft 1.4.2.