I changed one of the log levels in the admin console, and Glassfish 3.1.1 stopped writing anything into the domain1/logs/server.log. I since reverted the change and tried restarting the server a couple times. Here's the last thing it logged:
[#|2012-02-20T16:44:53.738-0800|INFO|glassfish3.1.1|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=46;
_ThreadName=Thread-7;|com.sun.webui.jsf.component.DropDown::The current value of component form1:basicTable:rowGroup1:6:col3:level does not match any of the selections.
Did you forget to reset the value after changing the options? |#]