httpd won't start because libpq.so.4 is missing

I had to power cycle my Redhat system and now I can't get httpd to start. Here is what happens when I try "service httpd start":

    Starting httpd: /usr/sbin/httpd: error while loading shared libraries: libpq.so.4: cannot open shared object file: No such file or directory


First off, libpq.so.4 sounds like a postgres library. I do have PostsreSQL installed, but I dont' know what it has to do with apache.

How can I fix this? I only use apache to forward traffic to other ports depending on what domain the user is coming to the site with. I don't recall ever adding any special modules, so I'm totally confused as to why apache is complaining about a postgres library.

I tried "yum remove httpd" then "yum install httpd" then I copied back my httpd.conf and tried to start it again, but that didn't fix anything.

FWIW, postgres itself doesn't seem to be having any problems.
HappyEngineerAsked:
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dinokhanCommented:
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HappyEngineerAuthor Commented:
I eventually worked around it by getting an rpm for httpd and using rpm --nodeps to make it ignore dependencies when installing. When I ran it, it complained about a missing *.so file, but I just created a soft link to a newer version of that file and it ran like a charm.

If yum just had a --nodeps argument then I would have been up and running a long time ago.

Stupid dependency systems.
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dinokhanCommented:
some time its helpfull
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richelieuhqCommented:
yum update apr-util
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