Possible reasons why at may not run for you:
- HAVE you run ./configure ? If that fails for some
mysterious reasons, you can also do a
make -f Makefile.old install
- You may not have a user or group 'daemon' on your system.
- If you find numerous 'try again' error messages in your syslog files,
you have too many processes running; recompile your kernel for a
larger number