[arch-general] Virtualbox Linux guest performance very slow

Hi :) the host is an Arch Linux 64bit install. I run Windows XP 32bit as guest, getting a very good, fast performance. I installed Fedora 17 64bit as guest and the performance is slow, the mouse cursor is moving in slow motion. Is there anything I can do to get a better performance? Regards, Ralf PS: I also will install a backup of my Arch Linux as guest and then switch to systemd for this guest ;) ;) ;) ;) ;). At the moment I got caught in playing with LVM for the Fedora install, since I never used it before, but systemd will be the next experiment.