Each user acct on a computer will have separate folders for cookies, this includes the java and flash cookies.
----If you are on a computer as user A and then you shut down the computer and log on as user B, none of the cookies from user A have followed, nor can any cookies from another user communicate.
HOWEVER, they can track your IP and if you have downloaded a program with active x controls (Turbolister) they can identify the different users. | 
