I had root/backups. After some times, my backups started appearing in another folder administrator/backups. I guess this happen after an update.
The problem was that the new backups included the old ones, which resulted in 6gb back-up files. Generating such big files, killed the server, kind of.
Solution - move the old backup files in the new folder, so they are not included in each newly generated backup file. Ya know what I mean!?
Hope that was useful to somebody.
Otherwise respect for the work - xCloner is a great tool.