Unmount Share on Sleep (sleepwatcher)

Hi - I hope someone can help with this, i have installed sleepwatcher and created a .sleep and .wakeup script to run, i want my .sleep to unmount the network afp shares on sleep and remount them on wake.

the problem im getting is that the mac mini is sleeping to fast for the .sleep script to run, i have read somehwere that this is a known issue with mountain lion but cant find a solution to it.. i am very new with scripts on the mac but know the script works as when I run it within the OS the drives unmount. It looks like the scipt is still being executed once the mini has been woken up.

Any help would be really great. Really getting to me at the moment

is no one able to point me in the right direction with this? please i really want this working, thinking of moving the windows HTPC in the living room and taking the mini upstairs!! thanks in advance