Partitioned sdcard not working with link2sd
Requirements:


have a SDcard with a second partition that is ext2/ext3/ext4/... formatted.
be sure /data/sdext2 exists
be sure that mount-scripts are in place (menu->more->recreate mount scripts in link2sd)


If unsure, do as root via adb:

df | grep sdext2 should show you a mounted ext2/ext3/... mmcblk0p2 partition