From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.14) Gecko/20080416 Fedora/2.0.0.14-1.fc8 Firefox/2.0.0.14 Description of problem: The xpvm program does not check if parameters "-M" and "-N" are followed by some arguments. Version-Release number of selected component (if applicable): pvm-gui-3.4.5-11 How reproducible: Always Steps to Reproduce: 1. start an X session and execute following commands in an X terminal 2. xpvm -M 3. xpvm -N Actual Results: 2 segmentation faults. Expected Results: No segmentation faults. 2 error messages about missing arguments. Additional info: