^ If you are using slim, it is real easy. One command is all that is needed, if you have slim set up like i proposed in this thread: http://crunchbanglinux.org/forums/post/180152/#p180152
Now, I do not suppose that you did that. You probably created a $HOME/.xsession to launch openbox.
If you have, get rid of it!
In a terminal window:
If I read this thread correctly, you have installed the packages xfce4 and xfce4-goodies?
If not, do it now:
sudo apt-get install xfce4 xfce4-goodies
This will automatically have added an alternative session manager for xfce4.
All you have to do is activate that session manager:
sudo update-alternatives --config x-session-manager
You will be presented a menu of possible session managers.
Select the number that corresponds with xfce4-session-manager,
Press enter
Restart your system (this is not really necessary, but perhaps for now it is the easiest way)
Do not use F1 to select your session. You want the default session.
Just fill in user name and password and will be dropped in Xfce.
Now, was that easy or was that easy? 
If you have problems, just post them here.
hth
Last edited by xaos52 (2012-01-27 18:07:35)