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gEDA-user: unusual feature in pcb



Dear all,

  A while back I posted a question about a feature in pcb whereby vias
spontaneously appeared in pads of my components.  It happened to me
again, and I found a way to reliably cause it.

  It seems to happen when rats are optimized on a board with some
nodes connected to a plane.

  Attached is a ".piz" file (which can be renamed to ".zip" and opened
as usual).   If you open the file: "./possible-issue/test/issue.pcb"
with pcb, and press "o" to optimise rats nests.  On my system this
causes a via to appear in C401.  Undo works, so I wonder if this is an
expected behaviour?

  I am using PCB version 20080202, on Kubuntu.

cat /etc/issue:
Ubuntu 8.04.2 \n \l

uname -a
Linux andrew-laptop 2.6.24-23-generic #1 SMP Thu Nov 27 18:44:42 UTC
2008 i686 GNU/Linux

  Does anyone know what might cause this and how to avoid it?

  Kind Regards


Andrew

-- 
╒═════════════════════════════════════════════╕
     Andrew Whyte MEng CEng
     Electronics & Software Design Engineer

               paramita ltd

╞═════════════════════════════════════════════╡
     @ - aw@xxxxxxxxxxxxxxxxxxxxxxxx
     ⌨ - www.paramita-electronics.com
     ☎ - +44 (0) 79 81 01 61 85
╘═════════════════════════════════════════════╛
paramita ltd, is a limited company registered in England and Wales.
Registered number: 6631289. Registered office: 788-790 Finchley Road,
London, NW11 7TJ (please use trading address for normal correspondence)

Attachment: possible-issue.piz
Description: Binary data


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