I've had this same, annoying problem too for awhile. Having to backspace and retype commands so often slows me down while I'm working.
I checked out the fluxbox git repository as of a few minutes ago ( git:// git.fluxbox.org/fluxbox.git ), compiled and installed that, but the problem remained. No one else has mentioned it here, but in my opinion this looks a lot like issue 3190205 in the sourceforge fluxbox bug system: http://sourceforge.net/tracker/?func=detail&aid=3190205&group_id=35398&atid=413960 In the comments of that bug someone mentions using wmctrl to switch desktops as a workaround. I've tried it and it's working well. The steps I had to take are: 1) Install the wmctrl package 2) Alter my .fluxbox/keys file. Change key bindings: # change to a specific workspace Mod1 F1 :Workspace 1 Mod1 F2 :Workspace 2 Mod1 F3 :Workspace 3 Mod1 F4 :Workspace 4 To: # change to a specific workspace Mod1 F1 :ExecCommand wmctrl -s 0 Mod1 F2 :ExecCommand wmctrl -s 1 Mod1 F3 :ExecCommand wmctrl -s 2 Mod1 F4 :ExecCommand wmctrl -s 3 3) Restart fluxbox or reload configuration This feels like a race condition bug to me, since it's so reproducible when hitting the keys quickly. Hopefully someone can find the problem :) -Cheers