[sp332]

How much RAM do you have on your machine? Are you running out because of Firefox? Actually the memory management has been really tightened up over the last year or so. Type "about:memory" into your address bar and you can see exactly what's going on in there.

[guojh0570]

Yes, I always see "about:memory" and minimize memory usage. My machine doesn't run out because of Firefox, but yesterday it took nearly 1G RAM. I have 4GB RAM.

[sp332]

OK so if you're not hurting for memory, then I think it's using an appropriate amount of memory.

[guojh0570]

I just wander why Firefox always takes more memory for no reason-Even I keep the same pages.