First post, sorry if it's too long or something. New Mac user but reasonably computer proficient. Setup: iMac 2008. FW & USB Seagate FreeAgent Desk for Mac - Used for Time Machine. Problem 1: Drive plugged in via FW800. When Mac is turned on the drive doesn't mount. To get it to mount I can either unplug and plug again, or put mac to sleep then wake again. Couldn't find a solution after ages Googling. Best I got was 'new macs have inferior FW chip to previous broadcom chip, live with it'. Not sure if that can really be the source of that problem though. But I got fed up and switched to using USB. Problem 2: Using USB the drive mounts fine on start, but startup times are much longer. With drive dissconected startup from push button to dock is 50secs. With drive plugged in time can be up to 3mins. That is ridiculous. I have Googled for ages and found few people with my problem. All threads I found just faded out with no resolution. The problem is independant of Mac or HD make. Once the drive went into a cycle of unmount, mount repeatedly. I left it for a bit and it seemed to fix itself. Sometimes backups fail, but then I manually do 'Back up now' and it is fine. Tried disk utility repair, but says drive is fine. Tried setting boot disk to Mac HD again, but that didn't help. Not sure where to go from here. Is the drive deffective? Or the iMac? Are FW mounting problems common? Are USB long boots common? Any help welcome, even just "my setup works fine using FW". Thanks, Simon.