Thanks guys, I made some changes: I set
browser.sessionhistory.max_total_viewers to 3 (changed from 5)
browser.sessionhistory.max_entries to 30 (changed form 50, what does this field do
browser.cache.memory.capacity to 14000 (dunno what it was)
And now firefox has been on for 12 hrs, multiple tabs, and memory consumption is only 19% according to top
Before the changes, memory would have hit 33% by now.
Harddrake2 is hanging up on my system - perhaps that may be why firefox was using so much memory ? If it could not query the system for the memory installed, perhaps it was assuming more memory installed that actually was ?
Heres another bigass thread on this issue: