after the upgrade to softaculous 4.0.7 it seems that the backup process is broken. The process starts, tell me that it will run in the background and will send me email, but after that nothing happens. No email, no backup in the list, no backupped file in the /softaculous_backups dir. I tried several times with different installations. No luck.
I had a special security configuration on my box which kicked out the normal way of function, and since they had all needed info they needed only a few hours and did a hard job (I saw the servermails) to solve the problem.