I confirm the same here with "http://mundoplus.tv/" in Firefox - freeze type (1).
$ lspci -nn | grep VGA 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV350 AP [Radeon 9600] [1002:4150] -- Kubuntu freezes when desktop effects are enabled https://bugs.launchpad.net/bugs/351990 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs