Does anyone have this computer or has heard anything about problems with the battery life. Mine is a little over a year old and the first (origional) battery lasted 6-8 months. Second battery lasted 3 weeks. Third battery lasted 5 dives. Replaced the battery for the fourth time today and I'll see how long it lasts. I know it's not the battery so I'm thinking it has a short or something and is frying or draining the batteries. Any help???