hmm your root space is ok but your swap eam usage and your cpu are very high.what kind of widgets do you use?you must know that widgets like foreca weather or something are the whole time running and downloading what can kill your cpu.first i would download the cpumem-applet its very usefull because it shows your alltime your cpu and memory usage.please uninstall everything you dont really need and be carefull with the extras devel apps.i know they are very ineresting but they can slowdown your phone