In "Options - Load/Save - General" I activated the "Save AutoRecovery information in every 5 minutes", "Automatically save the document too" and "Always create a backup copy".
If I don't save the document before the first auto backup, the LO doesn't create one backup but start an endless loop: The LO create backups until I manually save the document by Ctrl-S since the menu can't be use, after that everything is great.
LO: 220.127.116.11 (4.2.3~rc3-0ubuntu2~precise1)
Build az.: 420m0(Build:3)
Ubuntu 12.04.4 LTS
Seems similar: https://bugs.freedesktop.org/show_bug.cgi?id=78168
I have the issue in the following LO versions, too:
18.104.22.168 (Build az.: 40ff705089295be5be0aae9b15123f687c05b0a)
22.214.171.124 (Build az.: 63150712c6d317d27ce2db16eb94c2f3d7b699f8)
126.96.36.199.0+ (Build ID: bac09c5da376c2874c677169e4329be0a4a10cf3)
*** Bug 78168 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 78168 ***