Comment 13 for bug 1278511

I installed Ubuntu 14.04 a few days ago, and the fix described on 2014-02-20 has not been implemented. CTRL-Space is not working to enable/disable the input editor. I have gone to the following page seeking a fix:

https://launchpad.net/ubuntu/+source/ibus/1.5.5-1ubuntu2

However there are three downloads listed there and I do not know which I need, or how to install it. Please kindly give some user-friendly advice on how to fix this issue.
Thanks,
Swarup