It sounds like you need to rebuild the Catalyst module for your new kernel. I don't have an AMD card myself, but information should be available in the wiki: https://wiki.archlinux.org/index.php/Catalyst
It might be difficult since your problems are somewhat vague, but could you change your topic title to something more descriptive? Even "Mouse/touchpad and system freezes" would be better than the current title.
ijiboom wrote:Ok! Just got it working right now. The mistake I had made was i forgot to chown the home folder. Now the whole OS runs in three partitions (can't be bothered to delete /boot and reinstall grub and stuff...).Excellent, don't forget to mark your thread solved.