I have had a similar problem since the latest updates. Video plays with different colours in different sizes. ie three separate images all in different places. overall 1960 colour scheme.
seem to have ii flashplugin-installer 10.2.152.27ubuntu0.10.04.1 Adobe Flash Player plugin installer -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/588460 Title: adobe flash plugin won't play youtube videos correctly -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs