Comment 5 for bug 952108

It looks like Nautilus blows up to ridiculous amounts of RAM in conjunction with appmenu-gtk: Bug #788973 . This behaviour is known since Lucid: http://www.webupd8.org/2010/07/nautilus-memory-leak-fix-ubuntu-1004.html and https://answers.launchpad.net/ubuntu/+source/nautilus/+question/148866 .

I consider this as a very serious problem: Nautilus consumes currently 520MB RAM on my system (Precise, 64bit). Not every user has installed 8GB+ of RAM to satisfy the needs of Nautilus. Killing and re-opening Nautilus leads to 22MB, and 32MB when 3 windows of Nautilus are opened.