Linux: system-config-network does not come in Display Mode

I was working to connect my Blackberry as a USB Modem, suddenly my newly installed fedora core 10 gone through a silly problem. That is, system-config-network, system-control-network etc. are not coming in Display mode. Unfortunately I did not able to figure out why it had happened, but by the way, I had found a silly solution though, which was a consolation to me anyway. ;) I did this as a straightforward YUM updating.

Simply did following

yum update system*

Then just restart your system and hope it will work.