Gqview's sorting is painfully slow

I have noticed that the "sort" option available
with gqview is extremely slow compared with
sorting with other programs.

I have an athlon 1Ghz processor with about 1Gb of
RAM, running Redhat fedora core 4.
I have a directory with about 2700 images.

I am running gqview 2.1.1, but have observed
the same issues with all recent versions of
Gqview.

Suppose I start by having the directory sorted
according to name, and then change it to sort
by date. Here are the times using various
programs on the same machine:

Konqueror: 1 second
Gwenview: 1.5 seconds
Nautilus: 1 second

Gqview: 51 seconds (!!!)

(Note: thumnails, icons etc are turned off)

This has got to be a sorting bug, because
the initial sort does not take so long. For example,
if I leave the directory, change the sort type
and re-enter the directory, the file list is
displayed within a couple of seconds.

This is the only thing I find annoying about
gqview, which by all other measures is the
perfect image browser.

Magnus