[Dovecot] Problem with Dovecot 1.1.4 and dovecot-antispam 20080829

[Guillaume Hilt]

    Hi there,

I'm running a server under Gentoo 64 with postfix 2.5.5, Dovecot 
1.1.4-r1 and Dovecot-antispam 20080829 (all are the lastest versions 
availables under Portage).
I ran into a problem when I log in to my mailbox :

Oct 30 10:39:23 ks29138 dovecot: IMAP(hiltg): Loading modules from 
directory: /usr/lib64/dovecot/imap
Oct 30 10:39:23 ks29138 dovecot: IMAP(hiltg): Module is for different 
version 1.1.1: /usr/lib64/dovecot/imap/lib90_antispam_plugin.so
Oct 30 10:39:23 ks29138 dovecot: Fatal: IMAP(hiltg): Couldn't load 
required plugins

Is there another version for Dovecot 1.1.4 out there or must I go back 
to 1.1.1 ?

Thanks,

    Guillaume