Paul,
My review took 16 hours to complete and was extremely thorough (it's over 20 pages). Believe me, the product was "actually" used. However, I did not test multiple transaction backups. Thank you for pointing out this bug. I am sorry to hear you were disappointed in the product. I thought it was outstanding.
Please note: The assumption is that "multiple transaction backups" mean that the user was putting differential and log back ups to the same file. This is a not a highly recommended practice.
All the best,
Dale
Author: An Introduction to SQL Server 2005 Management Studio