[OSM-newbies] inconsistent retrieval of lat/lon from Potlatch

[Ed Hillsman]

I have been using Potlatch to select points of interest and then  
retrieve their latitude and longitude by typing "L". What I'm noticing  
is that if I select a point, hit "L", and then a few seconds later hit  
"L" again, I get different values in the last three decimal places of  
the coordinates. I found this when I discovered I had made a typo in  
transcribing a coordinate and had to revisit the point to get the  
correct value. I can do this indefinitely and get various values,  
without touching the point again, as long as it stays selected. This  
is troubling. I also have the red-shaded triangle indicating a  
communications difficulty during the session, but I don't see how that  
should be affecting the values if they are coming from the database.

Is this a bug, or am I misunderstanding how this should be working? If  
I am misunderstanding, then how do I get the "true" values for the lat/ 
lons?

Ed Hillsman