For the last few weeks, the "Ask Question" button is a bit of:
Using Chrome 31.0.1650.63 on Linux
From your screenshot, it looks like you've hit the font selection problem with the Roboto font. If you install Roboto under Linux, then when a site or program asks for Roboto, it gets "Roboto Medium" (which is quite heavyweight) instead of "Roboto Regular" (which looks normal). This is a problem with how the weights are set in the font files.
This site has an explanation of how to change your font configuration to avoid the problem. Once you've added the workaround you'll notice that ASE looks a lot 'lighter' in font terms, and much easier on the eye.