Mhn..
Seems the command is incorrect...still pull in repoforge pkgs.
Do you have anything important installed from repoforge? If not you can
disable repo by editing /etc/yum.repos.d/ (I'm sorry I don't know its name
now since we've used EPEL for years, but I think it's easy to find rf's
repo file by name), in the repo file set enable=0.
And try again...