Ever noticed that the results of an ArcGIS model that includes a Buffer tool can be different when run at 9.2 and 9.3/9.3.1?
It happened to me while providing ModelBuilder training yesterday which made me suspect that a change relating to projections may have been implemented between versions.
Sure enough!
An excellent explanation of the change in behaviour appears in ArcUser under the heading of Geodesic Buffers.
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