I forgot to answer your question - no I am not using file://

I set the logging as instructed in lightstreamer_log_conf.xml but it made no difference whatsoever to the output from the server. The log file for my adapters seems to behave OK though (I can switch between INFO, DEBUG etc successfully with my adapters). Have I changed the logging in the wrong place?
<!-- logging of Data Adapters interactions -->
<!-- at DEBUG level, events coming from the Data Adapters are dumped -->
<logger name="LightstreamerLogger.subscriptions" level="DEBUG"/>

<!-- logging of socket write activity -->
<!-- at DEBUG level, all socket writes are dumped -->
<logger name="LightstreamerLogger.push" level="DEBUG"/>
EDIT: Ignore that - I am looking at the console output! Let me check the other logs.