I have Redhat 7.3 and can't configure libol (I have the same problem with syslog-ng). I don't have an alias for ls, I don't know Why I'm having such problem, I've compiled other tar balls before without this error... Any idea?? [root@agua libol-0.3.3]# ./configure creating cache ./config.cache checking for a BSD compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking whether make sets ${MAKE}... yes checking for working aclocal... found checking for working autoconf... found checking for working automake... found checking for working autoheader... found checking for working makeinfo... found checking whether build environment is sane... configure: error: ls -t appears to fail. Make sure there is not a broken alias in your environment configure: error: newly created file is older than distributed files! Check your system clock Thanks, Chris DISCLAIMER: This message may contain confidential information. If you are not the intended recipient please advise the sender and erase the message. Thank you.