It seems that it has been a KDE 4.1.1 issue. With the new KDE 4.1.2 packages flashplugin works fine (except for the usual random hickups).
-- [intrepid] flash video freezes after few seconds in firefox & konqueror https://bugs.launchpad.net/bugs/275285 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