Comment # 45 on bug 906687 from Wolfgang Bauer

(In reply to Atri Bhattacharya from comment #44)
> Essentially, the evince browser plugin causes firefox to sometimes crash,
> but at least always a temporary freeze followed by a black unresponsive tab
> when opening eps files and so on within the browser.

There are not only problems with Firefox.
The evince-browser-plugin also causes QtWebKit to crash, see bug#901006.