1. Get an OS X installation with a non-local home directory (NFS, or also SMB). 2. Load Firefox on an empty page. 3. Wait for 1-2 days. Memory usage will slowly increase, after 1-2 days it will take hundreds of MB or more. This happens with no addons and a new profile. There are several open bugs regarding non-local home directories on OS X, none mention memory, but perhaps they didn't notice a slow memory increase? In other words, perhaps this is a side effect of one of those bugs? Original user report here: http://arstechnica.com/microsoft/news/2010/11/windows-xp-falls-under-60-ie8-loses-share-for-the-first-time.ars?comments=1&p=20964576#comment-20964588
you don't see the problem if home directory is local? is this version 3.6, or trunk build?
Sorry, I just relayed a report from a user, I can't attempt to reproduce it myself - I don't have a way to get an OS X installation with a non-local home directory. I was hoping someone that can duplicate that setup could check this out.
I don't think there's anything actionable here