Add myself to this list as well. I've deleted/removed my preferences, uninstalled the game and reinstalled. Removed and reinstalled from an archive of the current main version (tuesdays update for the proxy) and reinstalled the patch same thing.
This is using the beta patch 108.
Edit: I'd like to note this was working fine a few hours ago. Just left the PC running while I ate so nothing has been installed and my network configuration/firewall hasn't changed.
Just rolled the client back to 105 from 108, works fine. Can anyone else test that this works for them by unclicking pre-release and then verifying and rolling back.