install gparted leads to "Permission denied" errors, halting boot.

[Anton Rolls]

On Kubuntu 7.04,

I went to the konsole and tried to run gparted.
It replied "gparted isn't installed, try apt-get install gparted".
I did that, and gparted was installed and could be used.

(gparted was used to add an extended partition with two logical
partitions.)

Next reboot and Kubuntu can't boot all the way, displaying lots
of "/etc/init.d/rc: 2: sed: Permission denied" errors.

(I ran a system rescue cd and used gparted to remove the extra
extended partition. Still can't boot.)

What could have happened ?

Regards,

Anton.