I uploaded a new version of the plugin to http://www.intellij.org/twiki/bin/view/Main/LogMonitorPlugin
This version has a better, non flickering, ui.
And most important a, right now, a simple remote configuration of the remote logger.
Using your right mouse key in the table shows a popmenu with categories that can be set. The level of the selected category will be changed if one is chosen.
See the readme how this feature should be enabled.