I'm looking into buying Crysis after discovering that my computer can in fact run it decently. I noticed that it uses SecuROM and so it can only be activated on five machines. My questions are thus: Once a machine is activated, can it be deactivated? For instance, if I use one of the five activations and so have four left, can I deactivate it for the machine it's currently on and have five again? Does it last between reformats? For instance, if I were to reformat while it was activated, would the activation still be there when I reinstall the game (paired with hardware configuration perhaps), would it be deactivated upon reformatting (unlikely), or would it still leave me with four activations if I reformat an activated computer? I've heard some bad stuff about SecuROM itself, that it takes admin priviledges, disables system restore, etc. I've not confirmed those, but I would like to know if it's even worth it and what exactly this software does.