I had Office 2010 on my laptop for no good reason. All I needed to do was issue some invoices and do some presentations for the conferences I speak at. And Office always gave me trouble. Wanted to update all the time, lost file associations, crased and demanded the original disk to be inserted and more.

OpenOffice sucks, is slow and uses java and LibreOffice cannot open simple documents and wanted to change extensions and formats and other stupid stuff. So far I am happy with Kingsoft Office Suite, which is light and fast and does the basic stuff I need. Cheers!