I read the earlier thread on possible coexistence of OpenOffice and LibreOffice (the answer was no) http://ubuntuforums.org/showthread.php?t=1924823 and the wiki page https://wiki.ubuntu.com/LibreOffice (the answer was still no, also after 12.04 was added to that page).
However, I would really, really want to help with further analyzing this LibreOffice bug https://bugs.freedesktop.org/show_bug.cgi?id=51121 "Documents produced by LO 3.5.x and 3.4.x fail to open correctly when sent through Outlook Web Access; issue not existing in AOO or OOo3.3.The document cannot be open, but if unzipped and zipped, then it open correctly.", reported 15th June. Reason: the customer project that I am currently working on requires that I use their OWA, the problem described in the bug report has manifested there, and I have Ubuntu 12.04 at home, where it would be tolerably safe to test installing OO & LibO side by side, if that can be done. There are plenty of *n*x users in the customer organization, many of whom have LibreOffice, and it's a pain in the neck to remind everyone not to send ODT via email=OWA, but remember to always save in DOC format.
It would be easiest to create more test material if I could have both OO and LibO installed at the same time, but according to the information linked to above, it is not possible. I suspect that the impossibility of having both OO and LibO on the same Linux is one reason why further characterizing the LibO/OWA bug---not to mention solving it---has not proceeded.
Has anyone come up with a safe enough workaround so one could have both OO and LibO on 12.04, for test purposes? All (sane enough) suggestions will be received with thanks!
Note that I have posted the essentially same question on the CentOS and LinuxMint forums (I use all these three Linuxes daily ATM), because IMO this LibreOffice bug really needs to be solved, and getting it solved appears to require at least a bit more tested comparison material. And comparing the behavior of OO files that have been created in Windows (where I still have OpenOffice) to LibO files that have been created in a Linux system sounds like a non-optimal approach, though in the end that's what I'll do if nothing else is possible.
I have no illusions about Micro$oft rushing to fix their OWA because of this problem. My money is on the LibreOffice team, if this one is going to get straightened out at all.