[FIX] Loading problems in m2m.
[FIX] Loading problems in m2m.

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extra : convert_revision : nicolas.vanhoren%40openerp.com-20110510121551-flv5ie5jo5ura97c

splbio/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,splbio/openerp-web,vnc-biz/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,vnc-biz/openerp-web,vnc-biz/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web,vnc-biz/openerp-web