fc7t1: system-config-lvm gives "unknown error"

[yonas Abraham]

i have an uptodated fc7t1 and when I try to run system-config-lvm as a
regular user, i got an error message "unknown error"

but if I "su -" and run it, it runs with out error.

usually when I run it as a regular user, it pops up a window and ask
me for root password.

any idea?