This project is part of the KDE Edu project, you will want to get the version there which is up to date. You can look for more information about KAlgebra in http://edu.kde.org/kalgebra/ and KAlgebra KDE Userbase page.

If you want to contact me, you can mail me in aleixpol{at}kde{dot}org.

Please, take a look at Proli.