I'd like to thank [most of] the posters that responded to my two Leopard Issues postings. 1) The post (and the poster) questioning whether I'm old or young is irrelevant (and worse). The domain-guessing feature of every previous Mac browser (that I've used) is a valuable part of the Mac interface, and one that makes Mac easier and quicker to use than the dark side. I hope Apple agrees with me about its importance and restores it soon. 2) Yeah, I thought it was Verizon playing tricks. Maybe it is, but the PowerBook running Tiger and earlier versions of Firefox and Safari uses domain-guessing like it always did. More telling, when I boot the MacBook into Tiger and run the older browser versions, domain-guessing also works. Obviously, something is happening on my MacBook, not on Verizon's network. I don't understand what; I wish someone knowledgeable could help me. 3) BTW, I know you can add .com by using the command key, and all the other key combos as well. Yet domain-guessing has always worked with the return key alone. 4) The issue isn't how Verizon handles a poorly formed URL. Domain-guessing adds the www and the dot com, so the ISP sees a correctly formatted URL. I get the Verizon-Yahoo search engine because the browser sends the incomplete URL (the way I typed it). 5) Sorry to say, don't use my drive-changing as a guide for the MacBook Pro. One reason I opted for the MB was the incredible drive-replacement ease (Thanks, Apple). I have replaced the HDD on a friend's MBP; it can be done, but while it's easy on the MacBook, it's difficult on the MBP. I used the excellent guides in iFixit.com. 6) Thanks Apple, for a great machine and an improving operating system.