Hi List; Whenever I copy large files (>2G) or create large tar archives I basically loose control of my box (2.1Gz Laptop running FC5) until the copy or tar is complete. I can still try and work but the mouse movements are delayed several seconds, other programs take minutes to respond, etc. Is there a way I can overcome this so I can still work as normal during these operations, maybe a way to limit the amount of cpu or system resources that a cp or tar process can have? Other ideas? Thanks in advance