I have looked everywhere for a solution to my problem. I am using a Macbook Pro running Mac OS X Lion 10.7.5. I am running no proxies, and my firewall is off. I am connected to the internet wirelessly, but have tried connecting directly to the router as well. When I start the steam application, I get the option to log in using a pre-existing account or make a new account. Upon clicking the login button, I get a pop up saying:
Steam - Error
Unable to connect to the Steam network. 'Offline Mode' is unavailable because there is no steam login information stored on this computer.
You will not be able to use Steam until you can connect to the Steam network again.
I have tried restarting my computer, and steam, as well as uninstalling and reinstalling it. I have tried everything from deleting only the ClientRegistry.blob file, to deleting all the files in the Mac HD/Users/davidmftw/Library/Application Support/Steam folder, sometimes leaving the SteamApps folder. Nothing has worked. I also tried creating a new account using the desktop application. I am given this error message:
Create a Steam Account
Your computer is either currently unable to reach the Steam servers, or the service may be temporarily disabled. Please try again later.