Overlapping lines appearing thicker

[Jens Jacobsen]

Hi all OG wizards & novices,

thanks to Ted I got closer to the core of the problem with my overlapping
lines growing thicker, I think: There seems to bee a bug with the "snap to
grid" function when the measure units in the prefs (of OG) are set to
Centimeters. If I use the arrow keys all works fine, but if I use the mouse
to move, copy or resize a shape, the distance shift gets crooked somehow.

My grid is set to 5 cm with 10 steps, so moving a shape one unit right (with
"snap to grid" enabled) should move it to an x position of 5.5. Instead it
moves it only to 5.4 (please see pics at
http://www.jjac.de/insider/OGlines.html)

Because I often use Option+Mouse to copy a shape most of my drawings have
shapes with odd positions.
But, unfortunately even when I use Inches and an template with an Inch-based
grid the problem with the lines persists.

Ted wrote that he had this problem too, but could not reproduce it now. I
could not not reproduce it even once, which is quite frustrating. I must do
something fundamentally wrong, but have no clue what this could be. I would
be so happy if anybody could take the time to look at my OG file (on my
website) and try to fix the line problem there - and tell me how he/she did
this miracle, of course...

Thanks in advance for any hint!

-Jens