I installed Red Hat Linux 7.1 on my laptop. First I tried installing custom packages but used to run into dependency errors (depmod, while booting). So reinstalled it completely (all options). Now everything is working well. But I have all these extra processes (sendmail etc) which are starting up at the boot time. Since I won't be using them, is there a way to stop them from starting up at boot time.

2ndly. When my machine boots, the memory usage is close to 30% in KDE environment. (384MB RAM in total). But after accessing some gnome application the memory usage goes upto 80%. Any reason why it is doing that.

Thanks in advance.

this should help you set services starting at various runlevels:

https://www.redhat.com/docs/manuals/...-services.html

there is also a prog. called "ksysv" that you might like to check out.

I regards to disabling the services such as sendmail, I covered this in a previous post:

http://www.linuxquestions.org/questi...&threadid=1865

As far as memory utilization try running 'top' from the command line. While 'top' is running hit 'M' (please note that this is an upercase M) and it will sort your processes by their memory useage, this might shed some light on what exactly is consuming all of your resources.