Hi, Can modifications to /etc/security/limits.conf cause top process to be automatically killed. First, Here is the contents of the /etc/security/limits.conf * hard cpu 2 * soft nproc 5 * hard nproc 10 mailnull hard nproc 100 What i have noticed that top process is always killed, But after hacking investigations like monitoring bandwidth, monitoring chatbots, running rkhunter, verifying ps & top binaries i found the server appears clean. During this monitoring i noticed that always top process automatically killed when TIME+ column shows 1:59.96 and not all top processes are killed at the same time (i am logging via multiple ssh sessions),just the process that get 1:59:96 in the TIME+ column. Now, are there anyway that i can -as root- do that with myself by previous settings. thanx for your concern. hameed