Fcitx IME does not have offline installation method, you use the installation command installation try it, and download speed slow out the problem, there may be the source of the problem.
Ubuntu Installation Fictx IME
Ready to work: Uninstall Ubuntu default IBUs IME:
sudo apt-get remove IBUs
Then add the FCITX Source:
sudo add-apt-repository ppa:fcitx-team/nightly
sudo apt-get update
Then install FCITX, Sogou Input method, Google Input method, cloud input method, and set FCITX as the default:
sudo apt-get install fcitx fcitx-config-gtk fcitx-sunpinyin fcitx-googlepinyin fcitx-module-cloudpinyin Fcitx-sogoupinyin
sudo apt-get install Fcitx-table-all
Im-switch-s fcitx-z Default
Find time you still try Sogou input method and Google Input method bar, that IBUs input method with a good, but with the two input methods than the difference is too far, especially the cloud input.
Set the Chinese pinyin input in the IBUs to default in ubuntu13.04