[xubuntu] Wrong font rendered

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http://ubuntuforums.org – Hello! I have a strange problem with one of my Xubuntu 12.04 machines, but not the other. The Liberation fonts are installed on both machines. One machine renders it as expected. The other gives me what looks like Times New Roman, although it claims to be showing me Liberation Serif. I have the problem in both LibreOffice and The Gimp. It's acting as if Liberation Serif isn't installed, giving me Times New Roman as a fallback. But Liberation Serif is installed, and I want to see it. I've tried reinstalling Liberation Fonts using Symantec package manager, but I'm still being offered a L (Hardware)