Don't worry about the entries in the log file marked 'scrubbed' when unable to complete a circuit.All that means is for some reason a circuit was unable to be completed, whether it timed out waiting for a response, or one of your TOR circuits Guard, Link or Exit nodes suddenly went offline or was inundated with traffic it couldn't handle before the TTL expired.The 'scrubbed' part refers to the actuall address you were trying to reach. Vidalia doesn't store the addresses of .onion sites in its logs, it replaces them with 'scrubbed' so that they can't be recovered later by a third party. The name that shows up is the name of the exit node it was attempting to use.