When a user proceeds to checkout, the user's profile Primary phone number shows up in the Secondary phone number field on the Shipping Page (the Primary Phone shows up blank).

Smith Cart v4.67

DNN ver 5.06.03

SQL Server 2008 SP2

Have been waiting 6 months for this:

http://www.smith-consulting.com/Forums/forumid/1/postid/8172/scope/posts.aspx

And item 3 here:
http://www.smith-consulting.com/Forums/forumid/1/postid/9419/scope/posts.aspx#9419

This is still not fixed in 4.99. It was reported in June 2011.