Key insight: Small and even some regional banks are starting to feel the pinch of the federal shutdown on Small Business Administration-guaranteed loans.Supporting data: New loan applications at the SBA have been halted starting Oct. 1, and loans already in the application process have been on hold.Forward look: Analysts hope that a speedy reopening of the government could offset the losses from the shutdown, but the longer the government stays closed the harder it will be for banks to recover lost fee inco ...