I've seen the various reports that data can be lost on Snow Leopard when a user logs into a guest account and then back into their main account. However, those terms are a bit nebulous to me. What constitutes a guest account and a main account?
Background: on my machines (one Leopard, one Snow Leopard), there are a number of users. One is the system administrator, who has sudo privileges. I have my own main account which does not have sudo privileges. There are also accounts for my kids. Do any of those qualify as a 'guest' user?