Firefox Bleeds Memory

I am a long time Firefox user and know that it uses a lot of Memory.
Currently on my system, Firefox is using around 400 MB. On the other hand, Opera with more tabs open is using only 150 MB.
I was looking for some tweeks to somehow control this excessive usage of memory in Firefox and came across this article on CRN.
The author Ed Moltzen quotes Christopher- a member of Mozilla Board as

" As Mozilla starts down the path to running in the mobile space we are spending time looking at memory pressure issues more closely. . . (I)t sounds like the early data suggests that Mozilla really doesn't leak that much memory at all. But it does thrash the allocator pretty hard and that's what causes the perception of memory leaks."


The Mozilla dev attribute this problem to memory fragmentation , but the fact remains that Firefox can bring my system to a standstill.
I hope there will be some relief in Firefox 3, till then its Opera for me.

Here is an excellent Article that tries to fix some of the problems.
I have tried a few and they seem to work, though the memory utilization only reduces marginally.
Please try them and let me know how they go for you.

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