I purchased a NAVMAN S-150 GPS In-Car Unit last week from ****-smith online shop. I have been testing this device for several days now. Why is it that the various touch screen buttons respond differently at various many, many times. A button may respond easily to light finger pressure or tap, at other times, top heavier finger pressure or tap, at other times to sustained finger pressure, and at other times not to respond at all. I am not referring to a single particular touch screen button or bar - refer to a variety of them, responding to various finger pressures or taps at different times. In fact, it's getting to be too annoying because it makes it difficult for me to go through the different menus and areas of the navman unit. Is there anything wrong with my device?

Same device Navman 150 purchased 30 Nov 08 and immediately found the touchscreen performance was very erratic and poor. Both my wife and myself has trouble . Frequently you had to touch it multiple times to get it to change.

I took the unit back to th retailer and they have been very resistant to doing anything, in fact they looked at it and said it was normal and we needed to get use to it. We are still in discussions as we are not happy with the unit at all. I tried a TOM TOM and the touch screen of it was much more responsive and what I will call normal. Same device Navman 150 purchased 30 Nov 08 and immediately found the touchscreen performance was very erratic and poor. Both my wife and myself has trouble . Frequently you had to touch it multiple times to get it to change.
I took the unit back to th retailer and they have been very resistant to doing anything, in fact they looked at it and said it was normal and we needed to get use to it. We are still in discussions as we are not happy with the unit at all. I tried a TOM TOM and the touch screen of it was much more responsive and what I will call normal.