multilog does not use the file size I specify

Hi,

I use the multilog with file rotation, I try to specify the size of  
the file and the number of files but for some reason is not working.  
Maybe I'm doing it wrong.
My run file is the following:

#!/bin/sh
exec setuidgid log multilog t s16777215 n25 ./main

Right now it just keeps the default config and keeps 10 files of size  
99999.

I'm using Fedora C2
Linux 2.6.10-1.14_FC2smp #1 SMP Thu Feb 10 17:32:40 EST 2005 i686  
i686 i386 GNU/Linux

Thanks for your help,
Jorge