With the 5.2 release of RedHat, gimp would dump core with a floating point exception when a new graphic was created. With 6.0 release of RedHat (using generic kernel on an Avanti Architecture), gimp not only crashes when trying to create a new graphic, but it hangs the X-server as well. CTRL-ALT-BACKARROW doesn't kill the X-server. I had to log in through a serial port or through the network and reboot. Either gimp should be fixed, or it should be removed from the Alpha release of RedHat.
Please test with 6.1