Flush Mount Ceiling Fans - Do you know what? The name of the article is only out-and-out misleading. The only actual "disadvantage" when it comes to a ceiling fan is what it will take to get one correctly installed. Ceiling fans can be hard to install for the inexperienced do it yourselfer. In some cases, where the ceiling fan is to be set up you will need to run an electric line to the area. Unless you are adept at achieving this kind of thing, hiring a competent, bonded and licensed electrician will probably save you much grief in the long term.
There's also the minor "con" that entails the issue of periodic maintenance. Properly installed, a ceiling fan provides years and years of nice cooling and cost-savings on your heat bill (assuming you have a fan that enables one to reverse the blade direction).
On occasion, ceiling fans get out of equilibrium and require minor alterations. Without going into great detail, ensure that all of the screws are tight. When they're not tightening the ones that have come loose and run the fan. When the wobbling has ceased, your issue continues to be solved.
If not, make use of a yardstick or another straight bit of wood and place it (with the fan stopped) vertically at the outer edge of one of the blades. Rotate the blades by hand to make sure that the stick touches. Turn the fan on again and see if you have solved the issue.