Problems with loading a file - "LoadFile libxml2.so"

["Douglas Rockney" <drockney@xxxxxxxxx>]

I'm attempting to use the mod_proxy_html.so module with IBM IHS (i.e. Apache 2.0.47) on Red Hat ES 3, but am running into difficulties even providing the basics that it needs to run.  Specifically, if I attempt to load the file 
libxml2.so as is expected by the module, HTTPD hangs.  I have confirmed that libxml2.so exists and that is is valid (that is, it is the same binary as is installed on our other Red Hat ES 3 servers).  I tried both this file and the actual file it's a symbolic link to (
libxml2.so.2.5.10) as options after the LoadFile directive.

Here's some of the module/file directives in my httpd.conf:
----
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadFile /usr/lib/libxml2.so
LoadModule proxy_html_module modules/mod_proxy_html.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule deflate_module modules/mod_deflate.so
----
If I comment out the LoadFile... line, HTTPD states that mod_proxy_html.so has undefined symbols.  
If I also comment mod_proxy_html.so out, HTTPD loads with no issues.  
If I comment out mod_proxy_html.so and enable LoadFile /usr/lib/libxml2.so, HTTPD hangs.

When enabling libxml2.so, I set the LogLevel to debug and only see the following in the error_log.  (Nothing ever prints in the access_log.)
[Mon Apr 09 14:30:03 2007] [notice] suEXEC mechanism enabled (wrapper: /opt/IBMIHS/bin/suexec)
[Mon Apr 09 14:30:03 2007] [info] mod_unique_id: using ip addr <internal IP address removed>
[Mon Apr 09 14:30:04 2007] [info] mod_unique_id: using ip addr <internal IP address removed>

Thanks for any and all ideas, comments, further debugging pointers, etc.

-- Doug