A couple of times now I've had an Installer appear on the desktop without any kind of action from me. The first time I just ejected it, now it's come back I'm really wanting to know what might be causing this? When I open it and Get Info it doesn't reveal too much (to me). Any thoughts on this? Would be much appreciated. I haven't installed anything outside Steam for a couple of weeks now, the only exception being Flash updates, could that be causing it? Or related to it in some way? I've had Flash Plugin crash on Safari since the latest update but it is working fine now.