Folks, I found a bug in the XrdPosix interface, trying to use the C interface to handle large files. src/XrdPosix/XrdPosixXrootd.cc at line 131 there is a memset call with the last two arguments reversed... -- Gregory J. Sharp email: [log in to unmask] Wilson Synchrotron Laboratory url: http://www.lepp.cornell.edu/ ~gregor Cornell University ph: +1 607 255 4882 Ithaca, NY 14853 fax: +1 607 255 8062