I met with the same problem as described in Bug 513524 comment 4 (copy/pasted below). The problem still exists in Fedora 14. I would really appreciate a solution. === copied from Bug 513524 comment 4 "I just updated my laptop to F12, and started using a dual monitor setup (side-by-side, NOT mirrored) with more regularity. What I notice is that when I switch to fullscreen, tigervnc client takes over both displays, and plants itself half on one and half on the other. "This is especially annoying because I really like having the use of the ctrl and alt keys, and it seems the only way to get that is to switch to fullscreen.
I have the same problem. Either full screen needs to be smarter wrt multi-head or a grab keyboard/mouse feature needs to be added.
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