Freepbx 2.3.1 & Asterisk 1.4.13 voicemails have permissions set incorrectly

Have already had an asterisk 1.2 setup on this machine (different hard drive) but the exact same debian install, and custom kernel builds were used on both, so I doubt it’s the system itself. I’d prefer to try and fix this problem, than going to the trouble of downgrading, as I’ll only end up upgrading again, and probably end up back where I am now.

Dave