Erroneous speed recorded to GPX file

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Start logging to GPX file using interval of 5 seconds, however I guess any 
interval will do.

What is the expected output? What do you see instead?

- Expected output is the correct speed, for example: <speed>26.98</speed> 
(which seems to be metres per second), but approximately in every third 
interval (albeit irregularly) the recorded speed is insane: 
<speed>654.72</speed> that's 2356 km/h! It doesn't matter how fast I'm moving 
or not moving at all. That insane speed is always very close to that value, 
about 654 - 656 m/s.

- The H.Speed readout in the screen is not affected; it always shows the 
correct speed. 

- This error doesn't happen when logging to NMEA file. Therefore I think the 
bug must be in ttgpslogger, not in the phone itself.

What version of the product are you using? On what operating system?
- Latest version at the time, on S60 3rd FP2 (Nokia E72)

Original issue reported on code.google.com by tohis1...@yahoo.com on 31 Oct 2010 at 6:52

[GoogleCodeExporter]

I think this erroneous speed values depends on the used phone. I checked some 
of my tracking data made with a Sony Ericsson Vivaz (U5i) and i found nothing 
similar.

I recorded this tracks with a myself modified version of ttgpslogger where i 
fixed issue 2 and 3 of the bug list. (see issue 2 and issue 3)

Maybe you can use this version and check it again. 
(http://datenmuehle.org/TTGPSLogger/)

Original comment by andre.tippel@googlemail.com on 5 Dec 2010 at 7:42