When Mailscanner Restarts it leaves .wrk files in the /tmp folder. In the MailScanner conf file it is set to restart every 4 hours (i.e. 14400 seconds) for memory leaks. Every so often a .wrk file is left in the /tmp folder. Evidently MailScanner was unarchiving a large file an it might leave a large enough file to fill up the tmp folder. Then MailScanner restarts and tries to scan the mail and gets caught in a loop because the /tmp folder is full. This causes the load to slowly increase as the loop runs, the longer it runs the bigger the load. Even if you have PRM or something to restart it, the loop just starts over. I would assume (evidently incorrectly) when MailScanner restarts it 'ought to check for and delete the presence of old .wrk files. So apart from writing a cron and running it every 15 minutes or so that cd /tmp;rm -rf *.wrk (because I am not sure what that will do the MailScanner if it kills a .wrk file that MailScanner is using) does anyone know of any other option? Thanks in advance.