I downloaded the apache 2.0.52 src rpm (the FC3 one) and was going to add "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" to the spec file. But I read the ChangeLog and found this : Changes with Apache 2.0.49 *) core.c: If large file support is enabled, allow any file that is greater than AP_MAX_SENDFILE to be split into multiple buckets. This allows Apache to send files that are greater than 2gig. Otherwise we run into 32/64 bit type mismatches in the file size. [Brad Nicholes] However when I test it the file doesn't show up in a directory listing and any attempt to access the file gives me this : (75)Value too large for defined data type: access to /FC3-i386-DVD.iso failed So am I not interpreting the ChangeLog correctly perhaps?