Comment 11 for bug 368508

@Bob, please ignore the above comment and please copy and paste the following exact three lines into the terminal, enter your user password (Not root password) when asked:-

echo "deb http://archive.ubuntu.com/ubuntu/ jaunty-proposed restricted main multiverse universe" | sudo tee -a /etc/apt/sources.list

sudo apt-get update

sudo aptitude -t jaunty-proposed install libical0

Please let me know if you need any assistance beyond the above (The terminal is under Applications > Accessories)