GS 6.5 twice as slow as GS 5.1 - bug?

[Avinash Chopde; <address@hidden>]

I've a small test file ( 5K - http://www.aczone.com/test.ps )

Using gs 5.1, and the following command, it takes 15 seconds.
Using gs 6.5, and the same command, it takes 29 seconds.

Anyone have any ideas, is this fixed in 7.5 (or is that
twice as slow as 6.5 ?!)

Exact details of versions and commands (script output):

-------
GNU Ghostscript 5.10 (1998-12-17)
Copyright (C) 1997 Aladdin Enterprises, Menlo Park, CA.  All rights reserved.

gs -q -dNOPAUSE -dBATCH -dTextAlphaBits=4 -r100 -sDEVICE=pgm 
-sOutputFile=test.pgm -f test.ps

real    0m15.381s
user    0m14.410s
sys     0m0.930s

-------
AFPL Ghostscript 6.50 (2000-12-02)
Copyright (C) 2000 Aladdin Enterprises, Menlo Park, CA.  All rights reserved.

gs -q -dNOPAUSE -dBATCH -dTextAlphaBits=4 -r100 -sDEVICE=pgm 
-sOutputFile=test1.pgm -f test.ps

real    0m29.825s
user    0m28.160s
sys     0m1.470s

-------

Any help appreciated!

-- 
Avinash Chopde  
e-mail: address@hidden
home page: http://www.aczone.com/