[gdm-list] gdm username history

[Jehan PROCACCIA <Jehan Procaccia it-sudparis eu>]

Hello, since we updated our 200 machines parc to fedora-9 and 
gdm-2.22.0-8.fc9.i386, username login history keeps growing on the login 
console .
It has a very anoying drawback to keep autofs  homedirs to be present 
in  /etc/mtab and hence generating every minutes a umount/mount due to 
the use of autofs/nfs homedir . Then the nfs server is overloaded by 
rpc.mountd and everything becomes very slow.

How can I tell GDM not to keep an history of previously login users ?

thanks.