Axel Zellner <zellner(at)mentz(dot)net> writes:
> Comparing the results of coordinate transformation from NAV4 to WGS84 (and
> back) I receive different results when using a Postgresql database on Linux
> or Windows.
You'd probably have better luck asking about that on a Postgis-specific
list; whatever the difference is, it's likely not in core Postgres.
Personally I'm wondering about the significantly different PROJ
version numbers you show, but that might be a red herring.
regards, tom lane