Steam Client stuck on 'Checking for Available Updates'
( Edit by henryg @ Valve: We have released a fix for this problem. Please re-download Steam from the "Install Steam" link at the top of this web page and copy it to your applications folder, replacing your existing copy. )
I was trying to launch the Steam client earlier today, and I was just at the loading screen. I thought it was a problem with the client, so I replaced it with a new download from the Web. I was able to launch the application, and it updated itself. But now on relaunch, I'm sitting at a screen that says "Updating Steam. Checking for Available Updates..."
I'm on a different network than before, and I tried to replace the client more than once. I also tried renaming the registry.vdf file. Nothing has worked so far.