Reset the page zoom on websites that look wrong: "View > Zoom > Reset" (Ctrl + 0 (zero))<br /> See http://kb.mozillazine.org/Zoom_text_of_web_pages If you increased the minimum font size then try a lower setting (default is none) as a too high value can cause issues like you described. * Tools > Options > Content : Fonts & Colors: Advanced > Minimum Font Size * Tools > Options > Content : Fonts & Colors: Advanced > "Allow pages to choose their own fonts, instead of my selections above" See also [[Websites look wrong]] ---- Other things that need attention.<br> See http://www.mozilla.com/plugincheck/ Your above posted system details show outdated plugin(s) with known security and stability risks that you should update. *Shockwave Flash 10.0 r42 Update the [[Managing the Flash plugin|Flash]] plugin to the latest version. *http://www.adobe.com/software/flash/about/