I get my Gmail hosted mail through Outlook. Overall, i really like how I can sync everything (outlook, google, windows mobile) and have all my info with me pretty much wherever I go.
But one annoying part of linking Gmail to outlook is that when you flag an email for follow-up, it shows up 3 times (as duplicates) in your tasks list. It should obviously only show up once.
A quick google search, led me to this article:
http://www.howtogeek.com/howto/microsoft-office/prevent-outlook-with-gmail-imap-from-showing-duplicate-tasks-in-the-to-do-bar/
Take a read at it, it does a good job of walking you how to do it, along with screenshots.
