[guest1645]

Comment #28 on issue 139465 by GrantMc...@gmail.com: Youtube will not stay   
full screen in 1st monitor while working on second
http://code.google.com/p/chromium/issues/detail?id=139465

If your flash is going fullscreen on the wrong monitor this easiest fix   
I've used:

chrome://plugins in the navigation bar.
Click the +Details on the right side. (Chrome 21.0.1 beta)
Go to your Shockwave Flash section
Disable the pepflashplayer.dll [PPAPI(out-of-process) component].
Refresh whatever flash page you're looking at and it should work.

It's just a work around for now but it works.

Dear Adobe© Connect™ Customer,
Please note that the default settings in the recently released version 21 of Google Chrome browser, on Windows, are incompatible with the Adobe Connect Add-in. This means that Adobe Connect Add-in specific functionality like screen sharing cannot be used on Windows with this latest version of Google Chrome browser. Please change the default settings as explained in this tech note or use another supported browser while we work on a solution.
Thank you,
The Adobe Connect Team