It's that 30 point font that's blowing things out. I tried changing mine to 30 and it breaks a lot of sites in all browsers.
The overlapping here only happens with Safari though. Chrome and FF 3 and 4 don't overlap, but just like the screen shots you posted, in all browsers 30 does break the menus in the black bars at the top of the page, and jumbles up the bottom of the page.
FF has a setting in Content-Fonts under the Advanced button, to override page fonts or not BTW.
Here's how it's supposed to look at the top. With the font size at 30 though the black nav bars get blown out, in your pics the nav bar text is next to "Welcome Nana" and it's ghost type and way out of place.
You might also try using the MacTech theme in your Control Panel preferences. And instead of setting your minimum font to 30, leave it at the default (12 I think) and just use the Apple + or Apple - keys to enlarge the page.
Also, you might want to upgrade to Firefox 4. It's much faster, more stable and has a host of new features.
_________________________ The Graphic Mac- Tips, reviews & more on all things OSX & graphic design.
Xplain's use of MacNews, AppleCentral and AppleExpo are not affiliated with Apple, Inc. MacTech is a registered trademark of Xplain Corporation. AppleCentral, MacNews, Xplain, "The journal of Apple technology", Apple Expo, Explain It, MacDev, MacDev-1, THINK Reference, NetProfessional, MacTech Central, MacTech Domains, MacForge, and the MacTutorMan are trademarks or service marks of Xplain Corp. Sprocket is a registered trademark of eSprocket Corp. Other trademarks and copyrights appearing in this printing or software remain the property of their respective holders.
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.