[CentOS] Problem with PHP / Postgresql on CentOS6.2

From: Rudinei Dias <rudinei.dias at gmail.com>

> *PHP Warning:  PHP Startup: Unable to load dynamic library
> '/usr/lib64/php/modules/pdo_pgsql.so' - libpq.so.5: failed to map 
> segment
> from shared object: Permission denied in Unknown on line 0
> *PHP Warning:  PHP Startup: Unable to load dynamic library
> '/usr/lib64/php/modules/pdo_pgsql.so' - libpq.so.5: failed to map 
> segment
> from shared object: Permission denied in Unknown on line 0
> PHP Warning:  PHP Startup: Unable to load dynamic library
> '/usr/lib64/php/modules/xsl.so' - libxslt.so.1: failed to map segment 
> from
> shared object: Permission denied in Unknown on line 0

If it is only a posgresql problem, why does php complain about xsl.so too?
Permission denied... SELinux?

JD