I am having the same problem - when I open the log file, it is not finished but "stalled" 3 hrs ago (that's the time of the last stamp: "[4/22/2014 5:50:58 PM] Deleting folder N:/FolderName"
It looks like the files were backed up correctly to the external drive, but as FBackup tried to clean up moved/deleted files, it froze.
edited: I am using FBE 5.0.414.0 on Windows 7 64 bit
LOL. My outgoing email is capped at 20MB. There is no way a 300MB file will be zipped below 20MB. But I rebooted a few more times and then left it open for 3 days and it seems to have cleared this problem. This week's new problem: VSS copy is not working on outlook files and they cannot be backed up when open. I am having to do a lot of kludgy workarounds with this version of FBackup.