2018-12-08 I got the message: ``The computer has not enough memory!'' This happened on Windows 7 with 8 GB memory. It ran one Firefox window with about 100 open tabs. In contrast, I have a system with Crux Linux, only 2 GB memory and Firefox with over 1000 open tabs. That doesn't complain about lack of memory. This comparison goes between Linux and Windows as well as between old and new Firefox versions plus deactivated and activated web features. It's a shame to need that much resources! http://marmaro.de/lue/ markus schnalke