Please, I do not see how constructive comments can spoil anything [:)]. Now, what I had in mind was more directed to users belonging to a network which is often the case in companies and the more and more with individuals at their homes. Let's take the case of the companie, it may be very well the case that there is data on your hard drive that the other users may want to use while you are at lunch, or they may want to put a big file on your folder before leaving to lunch themselves, therefore shutting down your entire station does not seem very appropriate. Of course, if you have a laptop, you can always shut it down or even bring it with you, but I do not think that everyone has a laptop. If you take individuals also, assume you have several movies (backup copies of course) on one hard drive, and that for some reason you have to leave, then you can lock Pegasus Mail and leave the rest "open" so that the movies remain accessible. Anyway, the goal was to suggest an alternative to accounts password-protection, and my idea seemed simpler to implement since we have more or less the same with screensavers under windows. Also, there was concerns relating to this issue which were expressed here or on the mailing list. Of course, this is a rough idea, and I am sure that if it is accepted, then David and the community will make it something much more clever than what I suggested.