[cvsnt] I can't history a module

[capaverde at 3ia.com.br]

Hello
I would like to get a list of all activities
made on a repository module.
My module is named "pxt/pxtpcvdm". If I try

cvs history -ea >history.txt

I get a file with more then 5 Mb (my repository
has many more modules).

M 2004-09-17 13:01 +0000 T00363 1.17 pxtbexdm.pas pxt/pxtpcvdm/pgm 0050ba567c49
A 2004-11-17 14:49 +0000 T00363 1.1  pxtwtgdm.pas pxt/pxtpcvdm/pgm 0050ba567c49

These two lines was extracted from that file. I compacted
the output to fit the window.
But if I try to get only the entries of my module, using
that command:

cvs history -a -m pxt/pxtpcvdm

the output is "No records selected."
It's the same if I try any of the following commands:
cvs history -a -m pxt/pxtpcvdm
cvs history -a -m pxt/pxtpcvdm/pgm
cvs history -a -m pxt/pxtpcvdm/pgm/pxtbexdm.pas
cvs history -a -m pxt/pxtpcvdm/*
cvs history -a -mpxt/pxtpcvdm
cvs history -a -mpxt/pxtpcvdm/pgm
cvs history -a -mpxt/pxtpcvdm/pgm/pxtbexdm.pas
cvs history -a -mpxt/pxtpcvdm/*

What I'm doing wrong?