"On behalf of" still shows for linked gmail address

In regards to the recently announced feature to get rid of "on behalf of" (http://gmailblog.blogspot.com/2009/07...) mail send from one gmail account when logged into another still shows as "on behalf of".

For example, I have two gmail addresses, let's just say they are "one@gmail.com" and "two@gmail.com". I have linked them so that when I log into one@gmail.com, I can read and send mail to/from two@gmail.com.

When I send a new message to someone (from within one@gmail.com's mailbox) using the two@gmail.com address, this message still appears in Microsoft Outlook as being from "one@gmail.com on behalf of two@gmail.com".

I took a look in my options and in the "edit info" section of "Send mail as", there is no option to disable this behavior for two@gmail.com.