i hear ya. i like to have many tabs open..FF is normally good for what i need but it was crashing too much and i lost my restore option so i was pissed.
i go to safari and realize it takes atleast 3 gigs when i surf.
yea..im modifying...but damn thats alot.
Have you tried installing Click to Flash? I noticed the program itself was much faster once that was installed (never checked the memory usage, so I can't really help there).