This is in Internet Explorer 8 (8.0.7600.16385 64 bit), ckeditor version 3.2 revision 5205.
I can make the dialog close button disappear.
Click Image Properties button on the toolbar (Image left of Flash).
Click the red x button to close the dialog
Click Image Properties again
Hover over red x button
Hover away from red x button
poof! it's gone!
Tue, 03/30/2010 - 18:32
#1