The letters are too thick, and blur on the sides. And they are not a deep enough black... On windows it is a thin solid black. I have also noticed that in linux it seems to rather often render some text in between pixels and then blend the results, where on windows everything seems much more aligned to the actual monitor pixels. You can even see this with antialiasing completely disabled, some letters will take up an extra pixel. It is a bit difficult to explain. Slashdot frontpage in particular looks bad, it is like the main text is some shade of grey instead of black. The white on green text at the top of the page has very heavy color bleeding, while on windows it is a nice solid white line. I have no idea if this is just me being super picky, or if it is because I have a high color accuracy monitor, or what.