I put the "pop up real start menu" plugin in Control Center and hid the Windows XP SP2 taskbar.  When I click on the CC start menu button, the start menu flashes up, but immediately disappears.  Also, when the start menu flashes on, it is not always in the same place, sometimes an inch (2.54 cm) above the bottom of the screen sometimes in the normal bottom location. If I click it several times, it will eventually stick.  I have closed virtually all apps to see if one was interrupting, but have not found a guilty party.

Does anyone know if 1) there is something interrupting the CC start menu (it works fine from the Windows task bar), 2) if this is a known bug or 3) if there is a solution.  Option #3 is preferred, of course.