I did uninstall it with --purge option and install it again, and it now works fine !
The result of `dpkg -l flashplugin-nonfree|grep ^ii` gives : ii flashplugin-nonfree 9.0.48.0.0ubuntu1~7.04.0 Adobe Flash Player plugin installer -- No flash after update of flashplugin-nonfree https://bugs.launchpad.net/bugs/125986 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs