Reprojection of EPSG 27572 to 4326

[Nicol Hermann]

Hi List,

i encounter a problem in the reprojection of EPSG 27572 to EPSG 4326.
My reprojected layer are nearly 400 km on the left of the other layer.
I use gdal 1.3.1 and proj 4.4.9

When i manually change the original epsg entry 
(
<27572> +proj=lcc +lat_1=46.8 +lat_0=46.8 +lon_0=-2.33722917
+k_0=0.99987742 +x_0=600000 +y_0=2200000 +a=6378249.2 +b=63565
15 +towgs84=-168,-60,320,0,0,0,0 +pm=paris +units=m +no_defs  <>
)
which comes with proj 4.4.9 for EPSG 27572 to:

<27572> +proj=lcc +lat_1=46.8 +lat_0=46.8 +lon_0=2.33722917
+k_0=0.99987742 +x_0=600000 +y_0=2200000 +a=6378249.2 +b=6356515
+towgs84=-168,-60,320,0,0,0,0 +units=m +no_defs  <>

or

<27572> +proj=lcc +lat_1=46.8 +lat_0=46.8 +lon_0=0 +k_0=0.99987742
+x_0=600000 +y_0=2200000 +a=6378249.2 +b=6356515
+towgs84=-168,-60,320,0,0,0,0 +pm=paris +units=m +no_defs  <>

the shift disappear.

I have no idea what happens behind the curtain but i assume that it has
something to do with the prime meridian. My be a sign error.
I found three references in the archives which are related to this
problem i think:
http://lists.umn.edu/cgi-bin/wa?A2=ind0504&L=mapserver-users&T=0&F=&S=&X=133A9569A7022E6B06&Y=mapserver%40geoworld.de&P=36962

http://bugzilla.remotesensing.org/show_bug.cgi?id=601
http://bugzilla.remotesensing.org/show_bug.cgi?id=811

May be this information helps to track down the source of the problem.
Should i report this information as a new bug or should i update one of
the existing?

Nicol