Disable startup processes

[mattluc]

I would like to disable some processes from starting upon login, but can't figure out how. I am not referring to the Login Items of System Preferences>Accounts. I have checked /Library/StartupItems/ (empty), /Library/Preferences/loginwindow.plist (essentially empty), and ~/Library/Preferences/loginwindow.plist (which only contains the things that i do want, it matches my account preferences).

10.6. Any ideas?

 

[Hellhammer]

Is there something opening when starting up? You can't disable system processes, otherwise the system won't work

 

[mattluc]

Processes such as an Epson scanner thing and Steam's ipcserver (i would assume it would also open if i open the app) are what i'd like to prevent.

I just reinstalled OS X because of a lot of junk that bogged down the system. Things run great right now but i'm extra-sensitive to trying to prevent excessive processes this time. The small amounts of memory that they eat add up.