I just went onto the U.S. Dept. of State website and this is what it says about people getting taken out of hotels:
"In recent months, DTOs have used stolen trucks to block major highways and thus prevent the military from responding to criminal activity, most notably in the area around Monterrey. Also in Monterrey, DTOs have kidnapped guests out of reputable hotels in the downtown area, blocking off adjoining streets to prevent law enforcement response. DTOs have also attacked Mexican government facilities such as military barracks and a customs and immigration post."
While the article does warn people about traveling to Tijuana, they are most concerned about the areas of Chihuahua, specifically Ciudad Juarez, Reynosa, Tamaulipas, Durango and Gomez Palacio, and the area known as “La Laguna” in the state of Coahuila. Here is a link to the complete article:
http://travel.state.gov/travel/cis_pa_tw/tw/tw_4755.html
Mainly, what I gather from the article is to stay in well-populated areas, to leave jewelry and valuables at home, and to stay alert. My husband and I are leaving for OCC tomorrow, so we plan to stay at the hotel and if we venture out, we plan to stay in well-populated areas. We should all be fine!