http://www.sciam.com/askexpert_quest...A8809EC588EEDF
"how long can humans stay awake"
Another rare disorder, Fatal Familial Insomnia (FFI), is an autosomal dominate disease that is invariably fatal after about six to 30 months without sleep. FFI is probably misnamed because death results from multiple organ failure rather than sleep deprivation.
you dont die from insomnia, after a few months your body starts to shut down