Whether the "-CPUcount:1" switch helps or does not help I do not know since I just have not played enough since adding that switch to the program launcher icon to see if if makes any difference or not, since XP home does not recognize both processors anyway, I am pretty sure it won't have any effect there. I may look into making sure my installation of Wine is the latest stable release for Ubuntu (my version is 1.9.something, and the latest stable version is 2.0.something) if the -CPUcount switch does not help.