Hilario, thanks! Well, when you said to report the extensions, I tried to disable them and see what happened. Turned out that The Adblock extention (adblock plus 0.7.5.1) is causing the problem.
After disabling it, all the applets opened as expected. -- Firefox momentarily freezes while opening a java applet https://bugs.launchpad.net/bugs/135151 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