User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:184.108.40.206) Gecko/20100202 Firefox/3.5.8 (.NET CLR 3.5.30729) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:220.127.116.11) Gecko/20100111 Lightning/1.0b1 Thunderbird/3.0.1 Maintaining the top-level address books is made difficult by the default of entering the first part of the email address if there's no display name, case sensitivity of display names, and displaying all addresses in the top-level Personal Address directory. The result is needless duplication and difficulty in figuring out which address to delete. Reproducible: Always Steps to Reproduce: 1. Collect/Add Addresses 2. 3. Actual Results: Duplication Expected Results: n/a The problem arises if, for example, firstname.lastname@example.org doesn't use a display name but I give her one, or does but I give her a different one, and I put the address into a mailing list. Listing the addresses in the top-level Personal Address book provides no indication of which address is where. Similar problem with collected addresses: if the email address (alone), is already present, don't collect it. If an address (alone) is added to the Personal Address book, remove from collected.