So i followed all the instructions from the greasekit site (downloaded and installed SIMBL, downloaded greasekit, and copied the greasekit bundle to ~/Library/Application Support/SIMBL/Plugins) but nothing happend. I restarted my safari and my mac multiple times, but still no result. Its as if i never installed anything. I am using safari 5 on leopard with all updates installed. I would be very grateful if anybody could please help me get greasekit to work. Thanks in advance for your help!