In a Terminal, enter 'gksu gedit /etc/modprobe.d/blacklist-firewire.conf'.
Uncomment (remove the #-character at the beginning of the line) ohci1394, sbp2, dv1394, raw1394, and video1394. Then, comment (add a #-character to the beginning of the line) out the firewire-ohci and firewire-sbp2 lines. Save and Quit gedit.
Next, run 'sudo update-initramfs -k all -u' and finally reboot.

Now, when you plugin your camcorder, it should have permission by default (unlike in the past). Vote for this to become the default by indicating that this bug affects you.