The menace of a punitive attack was lately extended to specific countries; the last threat of this kind was issued on the Internet on the 11th of May.

In a 35 minute video, preacher Abou Yahya Al-Libi singles out Denmark, Norway and France for retaliatory attacks; these countries are to be punished for having published the Mohammed cartoons.  Al-Libi’s appeal is consistent with the one pronounced by Osama Bin Laden on the 23rd April, when he called for boycotting goods coming from the countries that claimed solidarity with Denmark in the cartoons affair.
Threats of attacks on European soil are being taken more seriously partially as a result of a recent incident that occurred in Germany.

Amir Cheema, a 28 years old Pakistan student, broke into the headquarters of German daily Die Welt on the 20th of March, armed with a knife and threatening to punish the newspaper for having dishonored Islam.
The attacker was found dead in his cell a few days after. The autopsy, held in the presence of members of the Pakistani police, confirmed that the student committed suicide. The affair went almost unnoticed in the German media, but was given ample coverage by the Pakistan press.   

Source: Le Monde (print edition) The Editors Weblog (for further coverage of the Mohammed cartoons clash)