We recently bought an Apple Time Capsule for backing up or main machines at home. The first thing we did was disable the wireless portion of it since we already have a wireless base station that's performing quite well (we've also been burned by bad Apple wireless products in the past, read: original Graphite Base Station had bad capacitors, an Airport Express that randomly drops the wireless signal, and two Airport Expresses that have faulty power supplies).

I needed to perform a restore from the time capsule to my PowerMac G5 via 100mbit/s ethernet. The total size for the restore was just over 90GB– it took just over 40 hours to restore completely. That's nearly two days! That's just wrong– there has to be a problem somewhere.

To it's credit, it performed as advertised allowing me to restore my computer completely from a backup. It just took longer than I believe it should have.

Needless to say, I'm now backing up my machine on an internal drive and leaving the Time Capsule for future generations until there's a fix.

Oh, and don't believe the estimate. It never went over 20 hours at any point.