Hi, can one of the Windows users check if you have C99 header files with typedefs like uint_fast32_t instead of just uint32_t Those are by definition "the fastest unsigned type with at least 32bit" and since we almost never rely on "exactly 32 bits", but just on "more than 16", we could switch at many places. This would be better for upcoming 64bit machines, and also it's better style. gruel