Browser rivals mock Microsoft's 'native HTML5' claims

"I don't think general-purpose hardware actually supports 'native HTML5.' Wake me up when we have HTML5 co-processors," said Chris Jones , a Web designer and developer who contributes to Firefox.

Microsoft has been beating the drum about browser hardware acceleration since it launched the first public preview of IE9 a year ago. More recently, it has promoted the idea that a browser is only as good as the operating system it runs on, and that by extension, browsers that run on non-Windows OSes, or even on the 10-year-old Windows XP, are sub-standard.

Last month, for instance, Hachamovitch said that rivals like GoogleGoogle and Mozilla "dilute their engineering investments" by creating browsers for the Mac, Linux and Windows XP. Alles zu Google auf CIO.de

Microsoft has also repeatedly used the phrase "lowest-common denominator" to describe how it sees browser development on XP, Mac and Linux. This week, it applied the same to its four-year-old Windows Vista when it said its next browser, IE10, would not run on that OS.

But the best line came from Beltzner, who first poked Microsoft on Bugzilla.