1 GB works fine, i use aperture to shrink the render area to 680x512 and 600x512 only for ui, the most time i dont need more than 500-600mb for the entire system.
I know the out of memory issue from my 5 wow on 1 pc with 2gb time. Thats not the problem (no disk drive going crazy at this time )
It also occours on the 2gb system, and one of the 1gb systems dont have this problem.
But i'll try to get as much information as i could, when it happend again.
I dont know if the problem is from keyclone, but if the problem occours the actually keyclone application is affected.

Maybe its caused if buttons like shiftlock, numlock, etc. accidently not sync on all 3 systems and i hit a shortcut i dont know about. (i'll check this the next time it happens)