there is nothing wrong.
All those things that you see in the Activity monitor are normal and Daemon is not a person but a type of software application that normally runs in the background.
These types of programs do a lot of things, like handling logs, and are necessary for the correct functioning of the system.
Things controlled by a daemon normally have a "d" on the end of the name, like distnoted. Distributed Notification Daemon.
Leave them alone, things could get nasty if you start to delete them.
Causes of a slow system include, but are not limited to, faulty hard drive, lack of RAM, full hard drive.
I use an IMac 10. 5. 8 Intel and I have been experiencing a slow system. Looking through the Activity Monitor I can see one of the active processes is something called 'distnoted by a user named 'daemon' also I see another _usbmuxd and yet another _windowserver. The first 2 seem to have significant amounts on memory listed and I'm wondering about the names since the only other names for the users are mine and something called 'root' . Please can anybody tell me if there is something wrong there and also what else could be the cause of the slowness of the system? I have done the usual repaired disk permissions etc and even archived and installed, hardware tests and all which showed nothing wrong. Please help!