The US stock market was closed yesterday (12/26/11) and the volumes in the Forex markets are extremely low. The currency pairs are remaining unchanged and the volatility is zero. These kinds of days are dangerous than usual to the forex traders because the market gives very few opportunities for good trades and the risk is getting higher.
One of the options to avoid this higher risk is to take a few days off until the holiday ends. Meanwhile, you can practice demo or anything else that works for you. However, it is possible to find some rare opportunities but then you have to take precautions such as using smaller than usual sizes etc. Good luck and Happy new year to all of us !