There are two sections of CS 188 this quarter, representing two entirely separate courses:
CS 188 lecture 1 (http://www.cs.ucla.edu/classes/spring06/cs188-1/) is David Smallberg's Programming Practicum.
CS 188 lecture 2 (http://courseweb.seas.ucla.edu/classView.php?term=06S&srs=187827201) is Arthur Lessard's Introduction to Information Security class.