From today’s mail bag:
I logged onto the App Store to upgrade my Snow Leopard Mac to Lion. It’s been over an hour and it’s still downloading. Is that normal?
A Lion download and install can take an hour or more, depending on the Internet connection and web traffic at that particular time. You see, there are three things that need to happen behind the scenes: The Lion system installer needs to download to your computer. Once downloaded, the installer upgrades your existing OS X system (10.6.8) to Lion. In addition, it also creates what’s called a separate Recovery partition on your hard drive that’s used to perform emergency repairs or reinstall the Mac OS X 10.7 operating system.