I am seeing a problem:
I think this only occurs after I have modified items.js
When i access the menu and select a root level item that has a sub-level, when I go back and mouse-over the sublevels - this sublevel menu appears in all of the 'slave' frames and not just in the slave frame adjacent to the menu frame.
When these items have been selected once the problem seems to disappear.
Is this a known problem?
Most likely this is the result of the configuration error in the frames description structure. Submit a support ticket attaching your menu files if you can't find the problem.