Chrome, Firefox and Safari all render beautifully on my machine, with Safari experiencing some rendering errors; Firefox even does ligatures correctly, which is

Chrome, Firefox and Safari all render beautifully on my machine, with Safari experiencing some rendering errors; Firefox even does ligatures correctly, which is something I've had trouble with before with fontsquirrel and the like. Whereas on my Ubuntu box everything is sharp and jagged and ugly as sin, particularly in text sizes like 14 and 12 pt. I'm inclined to think that this may be a font rendering issue, like the known tendency for ClearType to cram everything to a pixel grid.