Looks like you're using a Live CD, so pidgin isn't updated. You need to go to System -> Administration -> Software Sources and activate universe, updates and security (if any of them are unselected) and upgrade your system.
Looks like you're using a Live CD, so pidgin isn't updated. You need to go to System -> Administration -> Software Sources and activate universe, updates and security (if any of them are unselected) and upgrade your system.