User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 ( .NET CLR 3.5.30729) Build Identifier: 3.1.1 When I save a contact from their email to me to the address book, it seems to be going to a different place than it did in Thunderbird 2. When I click on "Address Book", the new contact does not appear. All I see are the contacts from my Address Book created in older version of Thunderbird. I did see that my Thunderbird profile is in a different place on my hard drive. Thunderbird 2.0 - Documents and Settings - Jerry - Application Data - Mozilla - Profiles - lwfhlgp9.slt Thunderbird 3.0 - Documents and Settings - Jerry - Application Data - Thunderbird - Profiles - e2x5jg54.default It looks like the Installer copied the 2.0 abook.mab file to the new profile. It looks like when I add a new contact, that information is stored in a file called history.mab. How do I get newly added contacts to go into the existing address book? Related question - when I click on "Address Book," where can I specify which one I want to use? Or will it always use "abook.mab? Reproducible: Always

see bug 456167 and bug 539000. workaround is star address book add-on if i remember correctly