Also note: The site will show a "busy" error message and not let your browse if the server load gets too high.. this is designed to help recover when the site get hammered or attacked. It is part of the software we use and not something the staff does.
However, if PC is busy, do go find something to do for 5 to 10 mins, then come back. This is so that we can recover the server faster.. if you all keep reloading pages, refreshing, logging in, etc.. it adds that much more to the already overloaded system, making it much harder to clear out the overload.