I just ordered 512M of RAM for my server, a B&W G3/350 with only 320M RAM running Mac OS X Server. I’m using it for my print server, file server, an IMAP server for archiving email, iTunes playlist sharing, a test server for my web sites, and I also have a few people logging in to it remotely. I *may* also try overclocking it to 400 MHz, although just adding RAM will probably improve the performance nicely.