Uh oh. Finding an a.out in your /var/log/httpd doesn't instill a warm fuzzy feeling. I have ~ 4k a.out there dated Oct 12, which unfortunately is just past my logrotate cutoff now, so I can't check access.log (drat) without hitting the (hard to hit) backups. file a.out a.out: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), not stripped I fired up a live-cd linux with no disks or net attached to try to run it (I put it on a usb stick). But when I do *the shell* returns ENOENT and won't run. I tried ./a.out. I tried moving it to a fs that shouldn't be mounted noexec. I tried strace a.out and strace ./a.out and strace shows only the exec attempt and the error print and quit. Huh? How can I get this thing to run? Anyway to see what it is doing? Disassemble? It is not stripped, so gdb? How can I step-run it from the start (ie nothing executes until I step)? What else to do with this file? I'll see if I can dig up the access.log from that date and get more details.