WU-ftp throughput option

I'm trying to implement bandwidth limiting with wu-ftpd. I'm not getting
any success in doing so and I can't figure what I'm doing wrong.

My scenario:

Everybody has a bandwith limit of 400 bytes/s.
Only user 'guest' has no bandwith limits in the directory "upload".

So I figured in ftpaccess:

throughput * * * 400 - *
throughput /home/guest /upload* * oo - *

But that does not seem to work. I created a next througput table to see
what seems to be the right syntax. Only the first to lines are working
all others are not. If I remove the second line of the table only the
first lines is working and all others are not. I'm lost... anybody????

throughput * * * 400 - *
throughput /home/guest * * oo - *
throughput * /home/guest/upload/ * 101 - *
throughput /home/guest /home/guest/upload/ * 102 - *
throughput /home/guest /home/guest/upload* * 103 - *
throughput /home/guest /upload/ * 104 - *
throughput /home/guest /upload* * 105 - *
throughput /home/guest upload/ * 106 - *
throughput /home/guest upload* * 107 - *
throughput * /upload/ * 108 - *
throughput * /upload* * 109 - *
throughput * upload/ * 110 - *
throughput * upload* * 111 - *

Arnaud.
(Using debian woody btw)