I posted a question yesterday about this, but no one replied. Maybe my subject didn't describe the problem so I am trying again.
I use DW on a dual monitor Windows XP system. The program is on the main monitor and I move some of the panels/palettes to the secondary monitor which is to the left of the main monitor. The problem is that when I click the little menu icon in the upper right corner of the panels, the context menus open all the way over on the far right side of the main monitor. Please see the attached image to see exactly what is happening.
I have tried everything I can think of to make this work correctly, but no luck. My Photoshop workspace is set up similarly and the PS palette menus open just as they should.
let your question there and wait, someone will answer to you. AND try to use Google with your appropriate keywords.
Kind regards and good luck