When Compiz is enabled the workspace switcher is set to four panes, even if it was previously set to a larger number.
Adding a second workspace switcher just duplicates the first instead of adding new workspaces.
If there is a Compiz setting for number of panes in the workspace switcher, I couldn't find it.
BTW what happened to exploding wiodows?
Otherwise Rawhide seems to be coming along well, with most of the things I previously flamed about fixed. There is hope Fedora 11 will be a worthy competitor to Windows 7.