Please go to system>adminitration>software sources and there enable lucid-proposed in the updates tab close that window, reload it and then update your system with sudo apt-get update; sudo apt-get upgrade logout and login again this will install the latest version of gwibber which I think would solve the problem for you.
Please go to system> adminitration> software sources and there enable lucid-proposed in the updates tab close that window, reload it and then update your system with sudo apt-get update; sudo apt-get upgrade logout and login again this will install the latest version of gwibber which I think would solve the problem for you.