I love disc brakes on bikes. So will you.

There have been some rumors that the braking force can loosen your front quick release. I have no idea whether it's true or not, although, on a hilly ride, a friend (with discs) noticed his front QR was barely doing anything when we stopped for water at one point. Now, the guy doesn't maintain his bike well, and it could have been from anything. But you asked if there's anything you should keep an eye on, and, perhaps, there's that. After it happened, my friend emailed me a link to this page: http://www.ne.jp/asahi/julesandjames...quick_release/