Comment 8 for bug 665787

Same problem here, tried to purge the ppa and rinstall it with your method (http://ammonkey.posterous.com/the-right-way-to-install-nautilus-elementary).
By pressing F4, nothing at all happens, it just stays as it.
I checked in the view menu, pressing F4 checks and unchecks the Clutterflow Mode, so the F4 of my keyboard is recognised by the system / program.
I tried to add this line "export CLUTTER_VBLANK=none" to /etc/environment and nothing changed, even after several reboots.

Which tests could we try to check what is wrong here ? What information do you need ?
Thanks a lot in advance.