Actually, they share similarities but the stylized X is different.
I think the homepage could stand a facelift. I don't like the long "News" frame and the long scrolling leaving the main frame empty. It shouls either scroll independently or have a "More" link to another page.
I don't like the references to KiXtart 95 and 2001. They date the software and confuse the true version. I think those references be dropped in favor of the 3.x and 4.x verioning.
The quasi-text [home] [bulletin board] [downloads] etc. stuff at the top of the page looks like the old-fashioned true text-only links for old browsers and slow links and should go.
The mixed font sizes for the links in the last paragraph should not be. We could also stand to loose the blue border/background.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.