Outlook 2007 Active Directory account lockout (resolved)

The problem was painfully obvious: Since installing Outlook 2007 my Active Directory account name continues to get locked out.

It seems as though this problem is caused by my local computer account name (which I am logged in as), is the same as the one in my Active Directory.  Outlook must be trying to unsuccessfully authenticate to AD using “username” instead of “domain\username”.  This seems odd to me, however since I changed my local Vista username to something different the problem hasn’t shown itself.

Thanks to Matt  / webdevmatt.com for the suggestion