The name of the folders doesn't matters, I tested with /home/sergio and /home/sergio/tmp, but with external USB disks I have the same problem. Even with diferent computers with Ubuntu 8.04 too.
To reproduce the problem you need to copy a big file that require some time to be copied (for example 400Mb), otherwise you won't see the dialog window.
The name of the folders doesn't matters, I tested with /home/sergio and /home/sergio/tmp, but with external USB disks I have the same problem. Even with diferent computers with Ubuntu 8.04 too.
To reproduce the problem you need to copy a big file that require some time to be copied (for example 400Mb), otherwise you won't see the dialog window.