Also as a kind warning,
NEVER USE GPS when your heading somewhere you do not know when your alone. ESPECIALLY, if your in kampung or near some rumoured haunted area. *edited*...at night, LATE night.
Day time is okay.
There is an incident When I'm heading back from KL (KEPONG) around 3am, MY GPS was directing me to some where else. usually in the day time it leads me from kepong to pj, using the toll. This time, It leads me somewhere else. Its obvious from kepong to PJ, i know which way to use, but the direction was WAY out, some more leading me dunno where. I did a "detour" and it result the same, I tried to off it, but it refuses. Cannot off. GPS kept asking me to "U turn" back to "that" direction. I don't know where and Don't want to know where its taking me to.
so I ignore it loooo. Till reach PJ, Then I shouted like a mad man, "I'M NOT THAT STUPID SUCKERS!!", then my GPS off dee. strange right??? There was no strange feeling along the way, except that my raido keep getting distracted sounds, and when I put CD in, the sound oso were distracted, like those 'ants sounds'.
I have no evidance or cases to support me, but hey, trust me at your own free will.

maybe your gps malfunction? I use gps 3 years edi no problem.