I noticed recently that my firewire hard drives are not mounting as they should. I remember downloading the two updates that came through yesterday (July 11th). To my mistake, I just acknowledge the updates and that's when my iMac started to bog down. It now takes forever to boot up. First the gray and white screen with the spinning wheel is up for at least two to three minutes. Then the blue background (not the BSD) is up for up to four minutes then the desktop appears. Then I noticed my firewire devices are mounting. I disconnected them and reconnected via the firewire - that didn't work. I powered the devices, down and powered them up - that didn't work. I rebooted the system - it didn't work. I shut the system down completely - that didn't work! Please help one drive is my Time Machine back drive and the other is my iTunes music/video backup.