Before this new version of Thunderbird, when I typed in the first letter of an e-mail address, it would display all the e-mail address starting with that letter and I could pick the address which I wanted. Now, when I type in the first letter of an e-mail address I get all the e-mail addresses in my address book in no particular order and I wind up with all the e-mail addresses in my 'write' command. If you pick the one you want to send, you invariably wind up with addresses you don't want in your 'to' box. Is there some way I can get back to the old system which was a lot easier and less frustrating than the new version that just seems to defy common sense and reasoning and is very inconvenient as it takes forever to get the e-mail address right that you want to send your message to?