... got an answer?
During the last month the following has happened:
1. TM started a backup but was still not finished after 40 minutes, when I put the computer to sleep and went to bed. (I can't now remember what the state was the next day). Why so much longer than before? I had not created or amended huge files (like video).
2. Yesterday: rotating arrow icon on main menu bar continuously rotating for about 25 minutes. No movement of the progress bar nor any TM disk (external firewire) activity. I restarted the machine and TM did not resume backing up. I did a manual backup which lasted a few minutes only. OK. I went to bed.
3. Then today, on waking, it did its first auto backup of the day (either immediately or a few minutes later), taking about 10 minutes which seems a long time since there was virtually no computer activity since the last backup.
Is all this normal behaviour please?
G5 2004, OS 10.5.8, 2 GB RAM, Time Machine 1.0