When computing the bounding box of a document I cannot reproduce here for
ownership reasons, which contains objects of the following types:

    <dia:object type="Network - Antenna" version="0" 
    <dia:object type="Network - Bus" version="0" 
    <dia:object type="Network - Cloud" version="0" 
    <dia:object type="Network - General Computer (Tower)" version="0" 
    <dia:object type="Network - General Monitor (With Stand)" version="0" 
    <dia:object type="Network - General Printer" version="0" 
    <dia:object type="Network - Router Symbol" version="0" 
    <dia:object type="Network - Switch Symbol" version="0" 
    <dia:object type="Network - WAN Link" version="1" 
    <dia:object type="Standard - Line" version="0" 
    <dia:object type="Standard - Text" version="0" 

dia can fall in an infinite loop. Two ways to produce this bug:
   1) print (perhaps twice) or export to PS/EPS.
   2) select view-->show all.

This does not seem to happen in the CVS head.

While I haven't done a source-level analysis of this bug, I suspect that we
might have a bug either in the RenderObject support (which has been removed
in the Head), or a problem perhaps still lurking in WAN Link or Bus.

This bug is actually Debian bug #107167
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=107167&repeatmerged=yes
Please send a notification there upon closing this bug.