Tried to activate GParted for the first time from within my installation (having used it often from a LiveCD prior to installation) as I wanted to partition a USB flash drive. It asked for a password being an administrative task, fair enough but it won't accept my root password

Tried several times... checked my password out on other things like root terminal, synaptic etc., all OK.
Is there a seperate password it uses I don't know about or have I missed something?
Just in case you need to know I'm on the current (and last?) version of Zen with the current kernel 2.6.38.8.bfs
Any ideas? Thanks.
