Arizona has experienced the most bank stress with 45.6 percent of its institutions having failed or being identified as a problem banks. Washington is a close second at 45.4%. The other stressed banking states include Nevada (43 percent), Oregon (40 percent), Florida (37 percent), Georgia (34 percent), California (34 percent), Utah (32 percent), Idaho (26 percent), and Colorado (25 percent).  The common theme among these is overexposure to commercial real estate lending, particularly residential construction & development loans, and the collapse of real estate markets.  At the other end of the spectrum with comparatively little stress include Iowa (4.3 percent), New Hampshire (4.2 percent), and West Virginia (1.5 percent). Vermont is the only state that has not experienced a failed institution or one appearing on the Unofficial Problem Bank List.