I have a mac OSX Lion all my software is up to date but am having problems running my diablo.
When im at my house on my wifi it works fine but at my friends house it fails to load, it will load up for my friend at both locations on his computer and im not sure why it isn't working for me.
Please suggest how i may be able to fix this problem.

When i open diablo it comes up with a window which says checking for updates and then doesn't load any further.
I have tried running my diablo through Diablo Setup, Diablo Launcher and Diablo III.