Postgresql8.4 install breaks Evolution on Ubuntu 9.10

Hi all,
I'm wondering if someone here know how to go about fixing this problem that apparently affects everyone who manually install Postgresql8.4 on Ubuntu Karmic(9.10).

Postgres installation seems to mess with something that renders other applications unable to function. For instance my problem is with Evolution Mail. This is the output I started getting after installing postgres:

evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by evolution)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/evolution/2.28/libemiscwidgets.so.0)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libgdata-1.2.so.1)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libgdata-1.2.so.1)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/evolution/2.28/libetable.so.0)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/evolution/2.28/libeutil.so.0)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/evolution/2.28/libeutil.so.0)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libebook-1.2.so.9)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libedataserver-1.2.so.11)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libsoup-2.4.so.1)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libgnomevfs-2.so.0)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libgnomevfs-2.so.0)
evolution: /opt/PostgreSQL/8.4/lib/libxml2.so.2: no version information available (required by /usr/lib/libgnomevfs-2.so.0)
evolution: relocation error: /usr/lib/evolution/2.28/libeutil.so.0: symbol xmlFirstElementChild, version LIBXML2_2.7.3 not defined in file libxml2.so.2 with link time reference

I can't be sure(no logs) but VMWare Workstation seems to have been affected here too, can't get it to work anymore.

Other people having the same problem:
http://ubuntuforums.org/showthread.php?t=1307864
https://bugs.launchpad.net/ubuntu/+bug/461105


Best regards,
Leonardo C.