My encrypted home directory worked  well with 8.04, I only had to make one change caused by the new xml format of the pam_mount.conf.xml file as follows:

<volume user="summetj" fstype="crypt" path="/dev/sda6" mountpoint="/home/summetj"         options="cipher=aes" fskeycipher="aes-256-ecb"         fskeypath="/home/summetj.key" />

After I installed 8.04 from scratch I had to mount the directory and chown the files to the new user.