Best idea: do a search on Launchpad for potential solutions, especially if you suspect a regression (a bug that was fixed that has now come to rear its ugly head again).
Here's your answer: https://bugs.launchpad.net/ubuntu/+source/lxpanel/+bug/846878 wxl -- Ubuntu-qa mailing list Ubuntu-qa@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-qa
