Just installed 7.0.1 today and upon opening IDEA, it is clear that no font is anti aliased, anywhere in the UI - menus, editor, project, etc... My system has i686 cpu Fedora 7 with all latest updates, KDE 3.5.8-7.fc7, nvidia driver 100.14.19, kernel 2.6.23.1-21.fc7, Sun JDK 6 update 3. See the problem in attachment screenshot idea-7.0.1-no-antialias.png. After googling, I found the following: http://java.sun.com/javase/6/docs/technotes/guides/2d/flags.html#aaFonts which describes a new AA property for JDK 6, specifically for the situation "JRE doesn't recognise your desktop setting (eg KDE)". So, I added: -Dawt.useSystemAAFontSettings=on into my IDEA/bin/idea.vmoptions. You can see the resulting (good looking) UI in attachment idea-7.0.1-with-antialias.png