Safari 6.0.1 still leaking a rediculous amount of memory

I love Safari for Mac.
But this memory leak issue has left me with no choice but to switch to Chrome.
Running Lion on a Macbook Air with just 2GBs of RAM (I didn't know Air's RAM couldn't be upgraded when I bought it), Safari is literally impossible to use.
According to the Activity Monitor app in my Utilities folder, "Safari Web Content" and "Safari" combined use a Gigabyte of RAM on average!
Other posts I've read either say upgrading to 6.0.1 resolved the leak, or deleting an addon/extension fixed it.
I turned off all my extensions, but the Monitor showed the same results.
Someone mentioned an app called FastTube that was silently eating up RAM, but I double-checked and I have nothing on my hard drive by that name. But now I'm wondering if there was some app I installed once and then forgot about which may have installed something into Safari that is now quietly eating up half my RAM.
If I downloaded and reinstalled Safari, would that disconnect any 3rd pary leecher apps? Would I need to delete my Safari preferences? If so, how do I do that without losing my bookmarks and such?
Any ideas?

From your Safari menu bar click Safari > Preferences then select the Extension tab.
If there are any installed, turn that OFF, quit and relaunch Safari.
There are several extensions such as DivX that can prevent QT content from streaming.

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