IMac crashes while making backup with TimeMachine to Western Digital My Book World

Question

When I try to make a back up with TimeMachine to my Western Digital My Book World Edition II, after some time I get a kernel panic and everything freezes. This happens while the back up-process is well under way. Finding the back up disk and preparinf the bak up takes quite some time (more than 20 min.)
I have updated the WD tot tthe newest firmware v. 1.02.12) and all Mac-updates are up tot date as well.
Any clues are greatly appreciated.
Regards,

Answer 1

Followed the directions on this page and it worked!
http://forums.macrumors.com/showthread.php?t=1102423
Part One - Turn on SSH (in the admin panel)
[1] Go to to http://mybookworld.local
[2] login: username will be admin, password will be whatever you have setup. If you can't remember it should be in your Mac OS X keychain (Utilities > Keychain Access, search for "mybookworld"). If you have not changed if from the default the password will be admin as well.
[3] Switch to advanced mode.
[4] From the System tab, pick Advanced.
[5] Enable SSH Access, and click submit.
[6] Click on the network tab and then the LAN button
[7] Make a note of the IP address
Small, maybe obvious, but nevertheless important point: For the install to work, your NAS needs to be connected to a router with internet access.
Part Two - Install netatalk2.2
[8] Open Terminal.app (Utilities > Terminal)
[9] Enter the following command (substitute in 127.0.0.1 for the actual IP address you noted down in step 7), then hit return:
Code: 
ssh [email protected]
[10] When prompted, enter the ssh password (will be welc0me).
[11] You are now going to download the installer. Enter the following command, then hit return:
Code: 
wget http://mybookworld.wikidot.com/local--files/netatalk2-2-on-whitelight/install_netatalk.sh -O install_netatalk.sh
[12] Once completed, you will need to run the installer. Type:
Code: 
sh install_netatalk.sh
[13] You will be asked a number of question during install, answer yes to all. When asked about the "DHX2 login process", I opted to install the modified version, so I can confirm it works.
[14] Once the box has restarted, you should be able to connect to your afp shares and continue to use Time Machine.