I just tested an encrypted configuration on real hardware using the kubuntu alternate amd64 ISO (20080417.1), and can only confirm some of the symptoms:
1. It was impossible to cancel the erasure while it was in progress. The Cancel button did not have focus, and there was no response when pressing tab.
2. Erasing took a very long time! There was no indication of progress, but with the size of the disk I was using, 1% is a lot, so I probably aborted before it would have displayed any progress.
I did not wait for it to finish, but I was able to switch to a text console with alt+f2 and confirm that blockdev-wipe was running, and there was plenty of disk activity, so I saw no indication that there was a hang in my case.
I just tested an encrypted configuration on real hardware using the kubuntu alternate amd64 ISO (20080417.1), and can only confirm some of the symptoms:
1. It was impossible to cancel the erasure while it was in progress. The Cancel button did not have focus, and there was no response when pressing tab.
2. Erasing took a very long time! There was no indication of progress, but with the size of the disk I was using, 1% is a lot, so I probably aborted before it would have displayed any progress.
I did not wait for it to finish, but I was able to switch to a text console with alt+f2 and confirm that blockdev-wipe was running, and there was plenty of disk activity, so I saw no indication that there was a hang in my case.