This is not a bad update, Snow Leopard is heading at the right direction. Generally I don't have any major problems. On one of my Macs sometimes I have problem ejecting a volume, just occationally, specially ext. FW/USB drives. Also, it'll be good if some one will give us a driver that works with PCIe eSTAT cards on 10.6. So far ALL drivers are imcompaible. I have a couple external eSATA drives.