Sorry to sound naive re citrix, but a few citrix/terminal services basics if I may:
1) When a user logs onto to a PC in the domain, once authenticated, they then (by double clicking a citrix shortcut) launch a citrix session which again prompts for username / password (what is that launcher/software called).
2) Also - if you have a busy network, am I right in thinking there will be a bunch of citrix servers to handle user demand? Is this called a farm?
3) What tool/feature in citrix determines which of the servers you will be logged into? And based on what parameters does it make that decision, i.e. this servers bust log the next lot of users on that server instead
4) By default out the box, do the citrix servers log which users logged on to which citrix servers and at what time? If so where would the logs be held?