The FAA issued an airworthiness directive in 2001 related to wing spar cracking around bolt holes. The Texas Raiders is currently undergoing inspection and repair to comply with that directive. It is a huge undertaking that requires removing the wings along with significant disassembly of the aircraft.
Update—She flies! After 7-1/2 years of work, the Texas Raiders took to the air again on October 14, 2009. The Texas Raiders has always been the most popular of the B-17s that tour airports and airshows, so it will be great to have her back on the circuit again.