The past 3-4 days the folder /usr/local/apache/htdocs/mrtg has been filled up with files called core.xxxx (where x is a number). Currently it contains 5.8GB of these files, while another server I have only has 270MB in this folder. Both servers have been running MRTG since April this year. Anyone knows what these files are and why they are created? Can I safely delete them? (allthough that won't help much if they keep being created). Any help would be greatly appreciated!