ls -lin an ascending series by creation date.
The date on one of the files was "wrong" - it didn't fit into the ascending series.
The first thing to realize is that
ls -lis not showing the creation date, but rather the access time. Compare this with modification time.
Anyway, it's very easy to change a file's access time, using
touch -t, assuming you own the file:
$ ls -l bubba -rw-r--r-- 1 smithfarm users 0 Nov 26 18:19 bubba $ touch -t 201210261819 bubba $ ls -l bubba -rw-r--r-- 1 smithfarm users 0 Oct 26 18:19 bubba
For more information on this topic, see this Unix for Dummies Q&A forum post.