All, We have a FC1 system running kernel 2.4.22-1.2115.nptl and kde3 configured as a backup server. The machine has 384MB ram. We have been observing the total memory usage of the system. If we let it run without reboot for days then we see the memory usage (as shown by top) keeps increasing steadily. At the end of the week, it barely has 8MB of "free" memory, rest all is used up. But "top" does not show who is using the rest of 376MB. The total of top 20 program's memory usage does not come anywhere close to 376MB. If we reboot the machine then memory usage drops to "acceptable" values of around 150MB. Below is the output of chkconfig listing. The machine runs at level 5. Any insight from experts would be appreciated. Thanks, Jay [root@backup root]# chkconfig --list gpm 0:off 1:off 2:on 3:on 4:on 5:on 6:off kudzu 0:off 1:off 2:off 3:on 4:on 5:on 6:off syslog 0:off 1:off 2:on 3:on 4:on 5:on 6:off rawdevices 0:off 1:off 2:off 3:on 4:on 5:on 6:off netfs 0:off 1:off 2:off 3:on 4:on 5:on 6:off network 0:off 1:off 2:on 3:on 4:on 5:on 6:off random 0:off 1:off 2:on 3:on 4:on 5:on 6:off saslauthd 0:off 1:off 2:off 3:off 4:off 5:off 6:off anacron 0:off 1:off 2:on 3:on 4:on 5:on 6:off irqbalance 0:off 1:off 2:off 3:on 4:on 5:on 6:off microcode_ctl 0:off 1:off 2:on 3:on 4:on 5:on 6:off smartd 0:off 1:off 2:on 3:on 4:on 5:on 6:off sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off portmap 0:off 1:off 2:off 3:on 4:on 5:on 6:off rhnsd 0:off 1:off 2:off 3:on 4:on 5:on 6:off crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off yum 0:off 1:off 2:off 3:off 4:off 5:off 6:off messagebus 0:off 1:off 2:off 3:on 4:on 5:on 6:off xfs 0:off 1:off 2:on 3:on 4:on 5:on 6:off xinetd 0:off 1:off 2:off 3:on 4:on 5:on 6:off ntpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off vncserver 0:off 1:off 2:off 3:off 4:off 5:off 6:off vsftpd 0:off 1:off 2:off 3:on 4:off 5:on 6:off yppasswdd 0:off 1:off 2:off 3:off 4:off 5:off 6:off ypserv 0:off 1:off 2:off 3:off 4:off 5:off 6:off ypxfrd 0:off 1:off 2:off 3:off 4:off 5:off 6:off xinetd based services: chargen-udp: off rsync: off chargen: off daytime-udp: off daytime: off echo-udp: off echo: off services: off time: off time-udp: off cups-lpd: off sgi_fam: on ktalk: off finger: off telnet: on tftp: off