Hello Maybe Nikhil is hitting the problem where hardware acceleration has to be disabled? I've seen this on two laptops using ATI video (open source drivers as far as I know, because nothing "additional"/"non official fedora" was installed on them) after upgrade to f17. In my case the problem was video playing too fast with no sound but I guess it could(?) cause even more serious problems. It happens with firefox as well as konqueror watching youtube, bbc or any other videos online (and it's fine when watching in say DragonPlayer, Kaffeine and similar "off-line" players). Nikhil, can you try disabling hardware acceleration (goto SystemSettings->Multimedia->Phonon and on audio branches (including the heading one) make "internal audio" the first/preferred one). -- Tomas _______________________________________________ kde mailing list kde@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kde New to KDE4? - get help from http://userbase.kde.org