Module 'kolabformat' already loaded in Unknown on line 0

[Rob Arends]

Hello,

I get the above error during Kolab 3.0 install.

The environment is CentOS6.4 x86_64, 2GB RAM, 1 CPU, 40GB HDD (on ESX4).

I followed 
http://bmts.us/wiki/doku.php?id=article:kolab:centos
because it was a CentOS6.4 specific HowTo that I'd seen on the mailing list
recently with others commenting they had success following it.

I started with fresh a "Web Server" build of CentOS6.4.
Then 'yum update',  'yum install screen', disabled selinux and firewall.
The rest is as per the above HowTo (64bit choices).

Then I get these errors during the "yum install kolab"

  Installing : php-pear-Net-URL2-0.3.1-2.el6.noarch
117/165 
PHP Warning:  Module 'kolabformat' already loaded in Unknown on line 0
PHP Notice:  Constant swig_runtime_data_type_pointer already defined in
Unknown on line 0
PHP Notice:  Constant swig_runtime_data_type_pointer already defined in
Unknown on line 0
PHP Notice:  Constant swig_runtime_data_type_pointer already defined in
Unknown on line 0
  Installing : php-pear-HTTP-Request2-0.5.2-2.el6.noarch
118/165 
PHP Warning:  Module 'kolabformat' already loaded in Unknown on line 0
PHP Notice:  Constant swig_runtime_data_type_pointer already defined in
Unknown on line 0
PHP Notice:  Constant swig_runtime_data_type_pointer already defined in
Unknown on line 0
PHP Notice:  Constant swig_runtime_data_type_pointer already defined in
Unknown on line 0

I have not yet run the 'setup-kolab' because I wanted feedback on the above
error first.

Can anyone advise if this is a problem that needs to be fixed, or can I
continue without concern?

TIA,
Rob Arends.