Not sure which forum to post this, but when my client attempts to connect to report completed WUs:

4/21/2013 11:05:45 | World Community Grid | Sending scheduler request: To report completed tasks.
4/21/2013 11:05:45 | World Community Grid | Reporting 1 completed tasks, not requesting new tasks
4/21/2013 11:05:48 | | Project communication failed: attempting access to reference site
4/21/2013 11:05:48 | World Community Grid | Scheduler request failed: Unrecognized or bad HTTP Content or Transfer-Encoding
4/21/2013 11:05:50 | | Internet access OK - project servers may be temporarily down.

(times listed PDT)