I just replaced my thermostat about 1 month ago. Today my radiator hose upper one that connects to engine. The dash computer said Coolant Temp first and the head gage was pegged.

I got the car towed back home. I've replaced the hose. The dealership wanted $375 to do the job; I did the job my self for $60 + another $60 for towing (not bad). They (dealership) advised me that the thermostat needs to be replaced.
My question is this... Should I replace the thermostat again, after it over heated so badly? Or do you think this is a computer related problem?

Thanks guys!