Memory leak?
Just for kicks, I wanted to check to see if this is a valid claim regarding memory leaks, especially the claim with i7s. I have an Mid2010 i7.
I have 15 tabs open in a safari window, flash is off (via ClickToFlash): 1 OWC (SSD page), Nikon Rumors page, 2 MacRumors pages, Apple Store page, Yahoo main page, 5 Art Wolfe pages (lots of images), Flicker account, Yahoo mail, Gmail mail, and Fry's main page. My memory count steadily grew to about 480MBs. And on top of the that, two separate windows of Safari, each with MacRumors: Reply to Topic page and the page of this topic (
https://forums.macrumors.com/showthread.php?p=11456180#post11456180). Memory grew to <550MBs.
Then I closed 15 tabs window and the MacRumors topic page window...memory slowly decreasing, hovering about 456-451MBs.
This makes senses because Safari will keep the pages in cache so if the next time you again visit the site(s) (you closed), it will render quickly.
Realize too, that graphically intensive sites with MBs of resources will need memory allocated and will only release memory from cache when the need arises. When and how often? Don't know. Unless the safari programmers overlooked memory cleanup in the latest version, which I highly doubt, the fact your safari memory usage is high is normal. It's also possible that a site may have been poorly coded for resource clean up, in which case, memory leaks can occur. I suspect that's what happened with the OP and safari isn't at fault nor is the i7s.
Anyway, I'm not getting the GB's of usage some are getting. And my i7 with safari 5.0.3 is working normally...seemingly of course.
Oh, btw, I did, after posting this reply, close all safari windows and quit safari via the dock (right click, quit) and safari released all memory. Well, that's one way to remove the caching from memory.