Getting Outlook password prompt with Google Apps mai

This evening I was having trouble access a Google Apps hosted email account in Outlook 2003. It kept prompting me to confirm my account details, even though I knew they were correct. After a bit of Googling I discovered I wasn't the only one with this issue. Anyway, a quick thanks to this post for the solution, which is to visit www.google.com/a/yourdomain.com/UnlockCaptcha - remember to replace yourdomain.com with, well, your domain name - obviously!