xsysguard is just great tool, I'm using it for years without any issue. Well... Version 0.1 is not build-able at the moment (2014) because dependencies evolved during last six years and API of the used libraries changed. I tried to contact Sascha but I have never received any response from him. Finally I decided to continue with the development by myself and make it compilable again. SVN repository is read-only for me, so I migrated it to github.com/mixalturek/xsysguard. I have released xsysguard 0.2 today, you can find it there. Enjoy!