Windows 7 SP1 supposedly has numerous hot fixes, hopefully including something to fix the dismal Firewire write speed of 8MB/s. I'm interested to hear from anyone if the SP1 resolved the issue for them. I reverted the driver back to legacy with no change on an old iMac and a 2008 MBP (FW400 & 800 on respective machines) prior to installing SP1. Please detail the port tested FW400 or 800 and the write speed average that the file transfer dialog reports in Explorer on a large file say 2GB. Obviously copying a file from your internal drive to an external FW drive. Initially after SP1 install, I still saw 8MB/s over FW400, then I installed TeraCopy by Code Sector then saw 30-40MB/s. I can't explain the anomaly and I don't have another spare Mac to do more testing. Any feedback here would be appreciated.