Just in case somebody facing the same problem.
An error occurred when transforming the geometry to the SRID of the geometry form field. == And also found this, at error log, and django-debug-toolbar log 2014-08-05 16:37:03,334 :GDAL_ERROR 6: Unable to load PROJ.4 library (libproj.so), creation of 2014-08-05 16:37:03,334 :OGRCoordinateTransformation failed. 2014-08-05 16:37:03,334 :GDAL_ERROR 6: Unable to load PROJ.4 library (libproj.so), creation of OGRCoordinateTransformation failed. I believed, i missed something.
A ticket has been raised by Giles about this missing package.
Hmm, that's odd, it looks like we must be missing a package. I've added a ticket to get it installed soon, but it might take a while. All the best, Giles