In explanation I should say that I ment cash in the bank as opposed to cash on hand.
If it is in the system it is now at risk. When governments need funds they will find them.
Longer term all cash is at risk because there are only two ways out of the current problem.
Default - This means that near cash ie government bonds will not be paid off in full. This can lead to bank failures and the loss of cash in accounts.
Inflation via financial repression - This is the plan - http://www.financialsense.com/node/5487
Martin Armstrong on what to do with your money
http://www.martinarmstrong.org/files/Where%20to%20Keep%20Your%20Money/index.htm