I'm using Chrome 35.0.1916.153 m on Windows, and, um, there's something wrong — there's nothing wrong with the web fonts! Apart from the Merriweather Ultra-Bold that's titling De Beneficiis, that is (and a quick check at Google shows that that same font is rough in the bold weight as well). Everything else is clean and well-aliased, and that's never been the case before.