could it be that you do not have enough RAM for xolox to run with? I'm not positive what the actual spec is but i have 5 times unregistered's and I notice a huge system slow down when xolox runs. In the earlier beta's my computer crashed several times due to i think to much usage of system resources.

it might not be as you can get xolox up and running but it could be that the longer your online the more queries etc your computer has to deal with.

xg