Distance and Average speed too small when GPS activity is not 1 sec

What steps will reproduce the problem?
1. Set the "GPS activity" to "run every 1 min" (step1.png)
2. Do some tracking (step2.png) - compare the Distance and Avg. speed with 
reality
3. Load the recently tracked file (step3.png)
4. Compare the Distance and Avg. speed with step2 (step4.png)

What is the expected output? What do you see instead?
The Distance value during tracking increases but shows X-times smaller number 
than it should.
The factor X seems to be the configured number of seconds between two samples. 
It is precisely so for "always on; log ev. ... sec" (tested on 5 sec, 10 sec), 
for other values ("run every ... sec") it is around that number of secs. For 
the documented case it is 48,54. 
The real track distance was around 7.4 km but result in step4 (expected output 
in step2) is correct due to some cutting of corners (see map.png)

What version of the product are you using? On what operating system?
GPS Cycle Computer v4.2, Windows Mobile 6.1
MDA Compact V (HTC Touch Diamond 2) with internal GPS

Please provide any additional information below.
In case you need some additional information or tests to be done on my device, 
please request.

Note: There is a similar issue reported 
(http://code.google.com/p/gccv2/issues/detail?id=52&can=1&q=distance), but I'm 
not sure if it's the same as its steps to reproduce don't mention the "GPS 
activity" setting which is essential for my case.

Original issue reported on code.google.com by jakub.sa...@gmail.com on 8 Jun 2010 at 1:43

Attachments:

PiRSquared17 / gccv2

Distance and Average speed too small when GPS activity is not 1 sec #53