After I first upgraded to Leopard, I downloaded CCC 3.0.1 and successfully cloned the system boot volume to an external drive; and it did boot up just fine. I recently bought a new Iomega 120 GB portable drive and tried CCC again (now it was with OSX 5.1). The copy want fine until 11.4 GB were copied and then CCC just stopped copying. It didn't freeze, it just stopped copying. I then retried a number of times, and CCC always stopped at the same file.

So I moved the file to another drive and tried again. Now it was the next file in the folder that CCC stopped at. I moved that file and CCC stopped at the next flle (always at 11.4 GB). I also reformatted as GUID-HFS+ (Journaled) several times (this is on a MBP). Thinking it was the HD, I used another backup app and it did copy the whole drive (but it was not Leopard compatible; the copy did not boot successfully - but the app did copy the whole drive). So now I suspect not the drive but CCC.

I've run DiskUtility to check the source and destination drives and they checked out. So, at this point I'm waiting for SuperDuper or a newer version of CCC.