Should I leave things alone since all is running well, or can I update the nvidia driver to latest version?
Nvidia drivers v.200+ have a completely different install process than earlier versions, so you'll have to setup GXM again. From there, anything can happen. :lol:
Don't worry though, interesting things happened in 8 months, and we now have a workaround in case auto setup fails: http://www.widescreengamingforum.com/node/11884
Welcome back to tripleheaded greatness (and casual tripleheadaches) :)