My Mac Mini has been running slow since I upgraded to Leopard several months ago. It is not Snow Leopard. My Mac Mini is running software version 10.5.8 and my processor is a 1.42 GHz PowerPC G4 with 512 MB RAM. Am I running slow since my Mac Mini is intel? Should I switch it back to Tiger or is there any other suggestions you can make. I have run the disk utility and have run the repair permissions. The computer is especially slow on Safari where it is faster on my MacBook pro. Thanks.