I agree that the default format is messy with a lot of log messages. Have you thought about using some more advanced framework/tool that helps you read/analyze logs? For example, our logging tool SmartInspect* comes with a Console that allows you to easily filter/view log messages of different threads separately, if needed.
The Console is Windows only, so this might be a problem for your in case you don’t work with Windows on your desktop. But I’m sure there are also other tools out there.
*) http://www.gurock.com/smartinspect/
Regards, Dennis