Hi Asok,
run lomanager and choose to Completely remove LibreOffice, it will test for and properly uninstall OpenOffice 2.x, 3.0, 3.1+, and any version of LibreOffice. Just run it again until you do not get this initial window but the omne with the language choices, then exit. At this point your install is free of OpenOffice/LibreOffice. Then copy over the directory with the latest LO-rpms and install then with the apt-get command.
good luck!
-p.