Thanks for the replies The PC has on board sound and graphics cards I have disabled the sound card in bios but the problem still occurs I have tried running 'glxgears' and that works fine with no problems A little baffling!!! Just a note when I run wine config it takes about 3 or 4 seconds before it locks up. The hard drive still wurrs on for 10 to 15 seconds. Ubuntu is installed as the only operating system on a 4 year old 20g hard drive. I do not know where to go from here???