Marc
Volumetric properties seem to work ok although on more complex solids the centre of mass option gets greyed out.
Snap to distance contraint works with either the fraction/percentage or the distance you specify in the options.
I found that I could snap to the corners of polygons but not polylines that were in viewports. However if I double clicked the viewport to annotate it I could snap to anything as if I was on the design layer.
I currently have a mac mouse so no scroll wheel and I also have found that the dynamic zoom is frustratingly slow.
Im running a 1.8 Ghz G5, 1Gb ram on Mac Os 10.3.9 with VW12 Architect Australia.
Cheers
Richard