If you have any problem while watching youtube videos, please check if it NOT flash (HTML5), if it got place, you should change POST query from your browser (chromium) to something like IE9\10. Use User-Agent Switcher. Then all HTML5 videos should be playing by flash. This only works if you got flash installed.Read more "Chromium HTML5 problem"
To check default browser used by clicking link, use: gvfs-mime –query x-scheme-handler/http gvfs-mime –query x-scheme-handler/https To change browser, use: gvfs-mime –set x-scheme-handler/http chromium-browser.desktop gvfs-mime –set x-scheme-handler/https chromium-browser.desktopRead more "Wrong browser after using link"