To me 10.6.8 is still the best OS X Apple ever released and I patched my system just like the shellshock back in September. It's really easy if you have some basic shell skills and XCODE installed,
Here is what I did, it may save you some time:
open the terminal app
1) Download the source code, apply the patch (I got the source code links from the ntp site)
cd ~
mkdir ntpd-fix
cd ntpd-fix
curl http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.8.tar.gz | tar zxf -
2) Patch and compile the ntp source code
cd ntp-4.2.8/ntpd
curl http://bugs.ntp.org/attachment.cgi?id=1165 | patch -p1
cd ..
./configure && make
3) Open the system preferences - Date & Time - uncheck Set date and time automatically (to stop the process)
4) Rename the old object and then replace/copy them with the new objects
cd /usr/bin
sudo mv sntp sntp.old
sudo mv ntpq ntpq.old
sudo mv ntp-keygen ntp-keygen.old
cd /usr/sbin
sudo mv ntpdc ntpdc.old
sudo mv ntpdate ntpdate.old
sudo mv ntpd ntpd.old
cd ~/ntpd-fix/ntp-4.2.8
sudo cp sntp/sntp /usr/bin
sudo cp util/ntp-keygen /usr/bin
sudo cp ntpq/ntpq /usr/bin
sudo cp ntpdc/ntpdc /usr/sbin
sudo cp ntpdate/ntpdate /usr/sbin
sudo cp ntpd/ntpd /usr/sbin
sudo chown root:wheel /usr/bin/sntp
sudo chown root:wheel /usr/bin/ntp-keygen
sudo chown root:wheel /usr/bin/ntpq
sudo chown root:wheel /usr/sbin/ntpdc
sudo chown root:wheel /usr/sbin/ntpdate
sudo chown root:wheel /usr/sbin/ntpd
5) Open the system preferences - Date & Time - uncheck Set date and time automatically (to start the process)
6) Done.
-- update time manually
sudo ntpdate -u time.apple.com
-- check ntpd version (should now be: ntpd 4.2.8@1.3265-o)
sudo ntpd --version
