Step 1: Remove previous version.
sudo apt-get remove skype skype-bin:i386 skype:i386
sudo apt-get install sni-qt:i386
Step 2: Install Skype.
sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install gdebi
wget download.skype.com/linux/skype-ubuntu-precise_4.3.0.37-1_i386.deb
sudo gdebi skype-ubuntu-precise_4.3.0.37-1_i386.deb
It is Important if you installed older version of Skype on your Ubuntu, Clear the old Skype folder:
rm -rf ~/.Skype
如果step 2的第2步更新時出現類似底下的錯誤:
略過 http://ppa.launchpad.net raring/main Translation-zh_TW
略過 http://ppa.launchpad.net raring/main Translation-zh
略過 http://ppa.launchpad.net raring/main Translation-en
W: 無法取得 http://extras.ubuntu.com/ubuntu/dists/r ... ce/Sources，404 Not Found
W: 無法取得 http://extras.ubuntu.com/ubuntu/dists/r ... 4/Packages，404 Not Found
W: 無法取得 http://extras.ubuntu.com/ubuntu/dists/r ... 6/Packages，404 Not Found
E: 某些索引檔未能下載。其已遭略過，或改為使用舊的。
可以編輯 /etc/apt/sources.list 檔案，然後把出現錯誤的聯結(底下是範例)
deb http://deb http://extras.ubuntu.com/ubuntu raring main
deb-src http://extras.ubuntu.com/ubuntu raring main
加上註解，就可以了
# deb http://deb http://extras.ubuntu.com/ubuntu raring main
# deb-src http://extras.ubuntu.com/ubuntu raring main
