I just got my unit back today from Pioneer after being gone for a month.  I will get it installed back into my truck in the next few days and will let you know if they fixed the problem. 

I don't know if anyone is still following this, but I got my unit back after waiting a month for it.  I got it installed and yes, you guessed it, they didn't fix the problem.  All the invoice said was they reset the unit????  I was told the unit was defective and needed to be sent in.  So emailing back and forth again with pioneer,(It take a half an hour or more every time you try to call them.).  I told them I can get them video, so they asked me to send them video.  It wasn't hard to get it to mess up to get the video.

Yea that's same as mine still haven't had the time to even speak to pioneer.... It's usually on the highway it loses me not necessarily going slow.... Wtf....

Any update Bill?

Was emailing back and forth with Pioneer trying to figure out what the problem is.  They finally decided that the unit has internal problems. This was what they origionally said.  Since I sent it to them once already and they did not fix the problem, they decided that they would exchange it.  So I had to send it back. They actually paid for the shipping.  Once they receive it, they will send me the new one.   Sent it out last Fri and they received it today.  Hopefully I get the new one soon and it works the way it should. 

FYI, when contacting Pioneer, the 2 times i called, it took over a half an hour to get through.  When I emailed them, they were pretty quick about replying to me.  It would be a good idea to have a video of it messing up and I took pictures of the status screen with the antenna strength and number of satellites.  They had me do a you tube video and send them the link.  They also requested the route I was on in the video.  They can run simulations of the route to make sure there are no satellite issues in the are. 

All and all, I wasn't happy that they did not take care of it the first time, but it seems they are trying to make it right now.  So I will see.  I will keep you posted.

Great ill attempt to do the same!! Thank you

I got my replacement and reinstalled it on Sat.  So far so good.  I haven't had any problems with it.  Pioneer came through.  It was a big pain having to send my stereo in twice and having to wait, but hey that's life.  Hopefully I don't have to go through this again.

Hmmm....Bill. There clearly MUST have been a bad batch.

I have not gotten around to calling Pioneer myself

I posted something similar back in October

http://avic411.com/index.php?/topic/39664-recalibrate-gps/&do=findComment&comment=285519

Spoke with pioneer they think it's a bad gyro sensor or something, in the settings I saw that the unit wasn't "learning" as to turns speed and distance, sent it back got it done and it's perfect now,