I was running a test case in a loop and my setting for auto-save are for 2 minutes. I am seeing ' java.lang.outofmemory: java heap space'. my memory setting are based on your recommendations for a 2GB machine.
I'm not sure what could be causing this.. I will add an internal check so that projects with running tests will not be saved during AutoSave (since this would access the underlying test-configuration from to threads at the same time)..
If this happens again please check for a stacktrace in the console window which could give some hint on where/why this happened!