Nice job.
Just a suggestion, to replace log_to_file native, have a look at shptools plugin, the log system is works flawlessly compared to log_tofile.
When i log things on my listenserver, with log_to_file i notice a lag or fps decrease, with the replacement i don't feel anything.
Just in case you don't know the plugin :
http://forums.space-headed.net/viewtopic.php?f=43&t=111