httpd and glibc compatibility problems

[damovand <galaxylappin optonline net>]

Hello all,
 am running RH9.0.  Upgraded from RH 7.2 using the official Redhat CD release 
in graphical mode. 
I am not able to start httpd, I thought I needed to upgrade and I did but it 
still does not start. 
 
When I do:                              service httpd start 
I get the error: 
----------------------   Error Message -------------- 
Starting httpd: Syntax error on line 6 of /etc/httpd/conf.d/auth_mysql.conf: 
Cannot load /etc/httpd/modules/mod_auth_mysql.so into server: 
/usr/lib/libmysqlclient.so.10: symbol errno, version GLIBC_2.0 not defined in 
file libc.so.6 with 
link time reference 
----------------------------------------------------------------------------------- 
 The following are installed, am I having a problem because of multiple 
version?  Could anyone please suggest any advice?  What is GLIBC_2.0 and do I 
need to set its values? 
------ 
glibc-2.3.2-5 
glibc-2.3.2-27.9 
----------------------- 
httpd-2.0.40-21 
httpd-2.0.40-21.3

Thanks for your advice