Now even after using the Ubuntu package manager, Aptitude, to install the required software OpenOffice still hangs on the modal dialog, making it impossible to close Open Office or do anything else with it. Only solution is to kill the Open Office process, which is called soffice. ie:
pkill soffice.bin. First annoyance I've had with OpenOffice, which apart from this 'lil quirk is the best Document Publisher/Editor - even better then the Microsoft Office Suite.
It appears this bug is already addressed http://qa.openoffice.org/issues/show_bug.cgi?id=74940.