Are you tired off typing logins? Don't want to load heavy/waste of time login managers?
This guide let's you have autologin and autostart for your XFCE:  

Let's open a console and then create the file autologin.c

Code:

sudo nano autologin.c

and paste this code inside (middle mouse button will paste the text you underline):

Code:

int main() {
     execlp( "login", "login", "-f", "your_user_here", 0);
 }

replace the string: your_user_here with the user you want to autologin. (ctrl+X to save) btw, use your prefered editor.

Let's compile.. you will need to have gcc installed:

Code:

sudo gcc -o autologin autologin.c

copy the compiled autologin file into /usr/local/sbin

Code:

sudo cp autologin /usr/local/sbin

now we need to edit the file /etc/inittab

Code:

sudo nano /etc/inittab

search for this:

Code:

1:2345:respawn:/sbin/getty 38400 tty1

put a # to comment this line and add this new line:

Code:

1:2345:respawn:/sbin/getty -n -l /usr/local/sbin/autologin 38400 tty1

it will look like this:
Code:

#1:2345:respawn:/sbin/getty 38400 tty1
1:2345:respawn:/sbin/getty -n -l /usr/local/sbin/autologin 38400 tty1
2:23:respawn:/sbin/getty 38400 tty2
3:23:respawn:/sbin/getty 38400 tty3
4:23:respawn:/sbin/getty 38400 tty4
5:23:respawn:/sbin/getty 38400 tty5

this will make the autologin stuff...



let's make the autostart:

Code:

nano .bash_profile

put this code on the bottom and save it

Code:

if [ -z "$DISPLAY" ] && [ $(tty) == /dev/tty1 ]; then
    startxfce4
fi

then you just have to remove your login manager :
Code:

sudo apt-get remove gdm xdm kdm

reboot your machine 

I used this page as guide:

http://www.dicas-l.unicamp.br/dicas-l/20030129.shtml