Bug 1260360 - Purge cookies on clean shutdown a...
Bug 257363 - Update sLastMouseDownTime when dou...
Bug 378775 - Implement Opera's behavior for sel...
Bug 998278 - Dragging a text selection made wit...
This has been fixed in the lxpanel master branch. The fix was announced here: http://sourceforge.net/p/lxde/mailman/message/31985441/...