After switching my hard disk to a solid state disk (Intel X-25M G2) this bug disappeared. This supports the assumption that the delay is caused by accessing lots of files on the hard disk as a task like this benefits considerably from the low access times of a solid state disk.
-- GNOME "Main Menu" panel applet slow to open on first click (NOT compiz related) https://bugs.launchpad.net/bugs/12040 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a direct subscriber. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs