Well, 4.0.2 works fine also. The problem is with g77 3.4 only. C.S.
----- Forwarded message from Cezary Sliwa <[EMAIL PROTECTED]> ----- When compiled with g77/gfortran, the double precision arpack examples hang before executing the first line of code. gcc 3.3 works fine. gcc 3.4.4, 4.0.2 x86 linux and mingw32 compile options: -funroll-all-loops -O3 Cezary Sliwa ----- End forwarded message -----