Hi,
Not a biggy but it is annoying.
I've had this in an older version and one I installed not too long ago (v1.90 build 536), if you click on one shortcut with the "Show Menu In Folder" ticked and then click on another similar shortcut then the menu doesn't work(in any similar shortcutr including the original). You have to close the dock (move mouse off it) and start again.
This happens on two computer, both with latest fixes from MS, one WINXP, one Windows 7 Ultimate.
Dennis