Bug#613564: more about the card
thanks for the follow up on this.
From the image you provided the latest thing on screen - that is/was
happening - it's gdm3 starting.
By this point network was already setup (7th line from top).
Without the card this doesn't happen?
Can you also test and give feedback with latest dailies  from the
future Debian 7.0 (which has a newer kernel) ?
1 - http://www.debian.org/devel/debian-installer/
Melhores cumprimentos/Best regards,