Thats horriable =( but there are many stories, of gamers having seizure's and things. And of corse it gets blamed on the games... chances are most of these people already had medical problems. It is sad to see =(
However , too answer your question. I remember back in the kunark days, my collage roomate and skipped class multipal times and played 36 - 48 hours strieght. And that was just killing LCD's in solb to try and hit lvl 60. Back then 59 was a hell lvl. and it lived up to its name, cause it was (HELL!). I dont think i could ever be that addicted to something again. Now im more of a casual player. Putting in 2 hours a night max. Unless its my day off work.. then ill put in 5 - 8 hours sometimes. =)
again, i hate to see things like that girl having a seizure. =( i feel bad for her.