Download (headless)
cd ~ && wget -O - "https://www.dropbox.com/download?plat=lnx.x86_64" | tar xzf -
compile and follow instructions (register if you have not):
~/.dropbox-dist/dropboxd
create dropbox_ENC.sh (chmod a x)
#/bin/bash
# automatic unmount : -i 1
encfs --extpass="kdialog --password Passwort?" -o allow_other /home/shorty/Dropbox/ /mnt/dropbox_enc/
create encfspw with your pw in it,
then create wrapperENC (chmod a x)
#!/bin/sh
encfs --public --extpass="cat /home/shorty/encfspw" $*
/etc/fstab
/home/shorty/wrapperENC#/home/shorty/Dropbox /mnt/dropbox_enc fuse rw,auto,user 0 0
all what you paste in /mnt/dropbox_enc/ is encrypted now ;) 
