I also previously filed a memory-leak bug report against nm-applet in natty (https://bugs.launchpad.net/bugs/780602), which I think got incorrectly marked as a duplicate of #779754 (though it shares some characteristics). In the comments of #780602 there is a pretty detailed analysis of several memory leaks by 'jkl102001', which might still be relevant here.
I also previously filed a memory-leak bug report against nm-applet in natty (https:/ /bugs.launchpad .net/bugs/ 780602), which I think got incorrectly marked as a duplicate of #779754 (though it shares some characteristics). In the comments of #780602 there is a pretty detailed analysis of several memory leaks by 'jkl102001', which might still be relevant here.