Hi forsik
I think it's due to the size of you backup, your /home directory is 47Mbytes. Those commands I had you
run that timed the tar operation are essentially the same command used by the backup utility. It took
20 seconds to tar and compress one 6Mbyte directory to disk, at that speed, it would take 2 minutes
and 40 seconds to backup 47Mbytes. That is, if time scales linearly with size and regardless of content,
which I don't know that it does.