User-Agent: Mozilla/5.0 (X11; U; Linux ppc; en-US; rv:184.108.40.206) Gecko/20060928 (Debian-220.127.116.11-1) Epiphany/2.14
It seems that xfwm4 can't be replaced when another window manager is called with --replace switch.
corsac@hidalgo: openbox --replace [~]
(openbox:3800): Openbox-WARNING **: A window manager is already running on screen 0
I guess xfwm4 should have received some signal and commited suicide ?
The original bug report agains debian package can be found there:
Fixed with rev. 24087.
Actually rev. 24097.
It seems that this bug isn't fixed, even in 4.4.2:
corsac@hidalgo: openbox --replace
Openbox-Message: The WM on screen 0 is not exiting
"metacity --replace" works for me
Fixed with rev 26585 in trunk and xfce_4_4 branch.