You can edit /etc/group to take out firewire and make sure admin is in there.
Type: Posts; User: aysiu; Keyword(s):
You can edit /etc/group to take out firewire and make sure admin is in there.
When you're in the root recovery console, you can add yourself back into the sudoers group.
More details here:
http://www.psychocats.net/ubuntu/fixsudo