Banks are particularly worried. "Banks and companies are starting to finance their operations locally," says Thomas Mayer who until recently was the chief economist at Deutsche Bank, which, along with other financial institutions, has been reducing its risks in crisis-ridden countries for months now. The flow of money across borders has dried up because the banks are afraid of suffering losses.
According to the ECB, cross-border lending among euro-zone banks is steadily declining, especially since the summer of 2011. In June, these interbank transactions reached their lowest level since the outbreak of the financial crisis in 2007.
In addition to scaling back their loans to companies and financial institutions in other European countries, banks are even severing connections to their own subsidiaries abroad. Germany's Commerzbank and Deutsche Bank apparently prefer to see their branches in Spain and Italy tap into ECB funds, rather than finance them themselves. At the same time, these banks are parking excess capital reserves at the central bank. They are preparing themselves for the eventuality that southern European countries will reintroduce their national currencies and drastically devalue them.
Source and full piece: Der Spiegel, 13 August 2012