Why won't my hfsplus partition mount read/write?

I would like to be able to record Ardour sessions on my macbook using a firewire hdd, then take them to mix on my 64Studio box (or vice verse). But for some reason 64Studio refuses to allow me write access when I mount the firewire drive. The appropriate fstab lines: `/dev/fwdisk1 /media/Working hfsplus rw,user,owner,auto 0 0` `/dev/fwdisk2 /media/Storing hfsplus rw,user,owner,auto 0 0` My custom udev rule: `SUBSYSTEM=="block", ATTRS{vendor}=="ST330083", NAME="fwdisk%n", OWNER="g", MODE="0600"` Here's how I know it's not mounting rw: `g@blackbox:/media/Working/glarbl_blarbl$ ls -lh` `drwxr-xr-x 1 g 99 12 2008-10-24 18:17 shortwave` ... `g@blackbox:/media/Working/glarbl_blarbl/shortwave$ touch temp` `touch: cannot touch 'temp': Read-only file system` I also changed my UID to match that of OSX, without any luck. I'm at a loss, any ideas?