I am currently running Fedora Core 4.Can any one tell me how to install (downgrade)gcc 3 over gcc4 ? None of the software(tarballs) get compiled on my system (Athlon 64 2800+ 512 MB RAM). The ./configure comand works fine but I always get errors (errors relating to some virtual constructors) while issuing the ./make command. This used to work perfectly in Fedora Core 3. Also is it possible to install KDE in Ubuntu 5.04? I have Ubuntu CD's and wanted to try it .But since there is no Kde I did not install it. Can we install RPM's in Ubuntu ? Or is there some different format ? Will tarballs work ? I use Linux for learning stuff & listen to music.Can anyone help me in choosing a single distro permanently as I have tried lots of distros and want to settle down with a single one.Currently I am fed up of Fedora Core 4 as none of the softwares get installed. Also can anyone tell me how to install GUI for mplayer. Please dont get angry for so many questions !!!