I need a better (faster) GPS application. I had an out of town trip, so I purchased a month of Wayfinder service on my new N810. On other days I got the GPS to work, but it would often take 15 minutes to sync with the satellites. It never did sync quickly. For me, this is just unusable. My sister's dedicated GPS (a cheapo unit) will sync under the same conditions in a minute or less. I tested both by walking around my neighborhood at home and the N810 is always way slower to sync with the GPS satellites. How can I resolve this slowness? Thanks.