The full backup, which I did after I got my TC two months ago, was very slow, too. That first backup took 20 hours to backup 80 GB. But the problem isn’t limited to backups, as I will explain.
I have thought for some time that my TC took longer to copy files to its hard drive from my MB Pro than was required to copy the same files to my XP desktop machine, which is on the same network. My suspicions were first aroused when I saw how much quicker backups of my Quicken 2008 files were when I made them to the XP desktop than had been the case when I was copying them to the TC. The desktop machine is connected to the TC’s router via Ethernet.
Today, I was able to demonstrate just how slow the TC’s hard drive is. I transferred an MP4 movie file, which was about 2.4 GB, from my MB Pro to the TC and the transfer took 18 minutes. Then, I copied the same file from the same place to an external 250 GB drive, which is connected to the XP desktop machine via a FireWire 400 connection, and the transfer took only 8 minutes.
I wish I knew what was going on, but I don’t. Both transfers were made wirelessly over the same 802.11n (802.11b/g compatible) network, for which the TC is the router. It would seem to me, therefore, that a transfer to the TC should have been as fast or faster than a transfer to the external drive of another computer on the network. It looks like Apple still has some work to do on the TC.