Sorry to change the subject (I happen to like Australis. Used with Tab Mix Plus)
When I first load WaterFox v30.0 (also happened with earlier versions of WF)
it claims about 800 to 900 MB of memory with 4 tabs open (three news sites and FaceBook). Over time, less than one hour, this has climbed to over 1.4 GB and sometimes increases to over 1.6 GB. Closing tabs has no affect on reducing the memory use and as WaterFox claims more memory it slows to a crawl, to the point of becoming unresponsive at times. See attached screen shot. Is there a way to get WaterFox to release it's unused memory? Thanks in advance.