Hello, I'd like to add my support for the theory that adwords is causing the slowdowns. I'm having the same problems as described by the thread starter. When loading a page, first the page loads, and then, just when you want to start scrolling or clicking links everything freezes for a few seconds. I've found that, by turning off java(script) the page loads normally, no adwords are generated, and no slowdowns are caused.
The Windows XP CPU monitor shows that, when loading a page with JavaScript on, the usage jumps to near 100% for a few seconds: (refresh on the main forum page)
Whilst when refreshing the main page again, this time with JavaScript off:
All this on a Pentium 4 1,8 Ghz with 512MB ram, Windows XP and in FireFox. A somewhat older system for sure, but it runs the latest games just fine

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