Hi, I need to solve problem with seeking streams for large files. The problem leaks on Windows 32 and 64 bit, but the solution I'm looking for needs to be portable to Unix too. I have discussed this issue on #boost IRC and it looks Boost.IOStreams does not provide any cure for it. I've just found this problem was discussed 5 years ago. http://lists.boost.org/Archives/boost/2005/03/83087.php with some interesting suggestions: http://lists.boost.org/Archives/boost/2005/03/83140.php I'm wondering, has been there any motion on any level, Boost or C++ standard, to solve it? I'm looking for recommendation of any solution that would be sensible for this problem. (I can't ask my clients to move to STLport :-)) Best regards, -- Mateusz Loskot, http://mateusz.loskot.net Charter Member of OSGeo, http://osgeo.org Member of ACCU, http://accu.org