a couple of things come to mind, are you right-clickng innerspace/isboxer and running as admin? is your power supply not supplying enough power and this is causing the freezing? any background programs running that might interfere with innerpsace or world of warcraft? are you able to open 2 instances of wow without innerspace running and have them open without any problems?

@suicidesspyder

you just hijacked this guys thread
there is a "what does innerspace do differently" post floating around this section, might give you an insight on what innerspace can do for you