That might be considered a convenience to someone inside Apple, but for IT departments, the change is a significant problem. First, business-sensitive data may be exposed to passersby as the previous evening's work gets opened the next morning. Also, it means that server-based applications that were running at shutdown will be launched at boot time, whether needed or not, most likely overloading servers every morning and causing network congestion. And, it also means users will need to wait for their Mac to process all of the apps before they can start any meaningful work.
This dubious change would not be so awful if you could permanently uncheck the option. But you cannot. Users have to uncheck the option every time they shut down the machine. It's an utterly time-wasting, resource-wasting, security-risky "feature" that cannot be changed.
Another enterprise problem with Lion are a couple of updates in the Security & Privacy system preference. The default settings for Location Services and automatically sending system data to Apple are turned on. That means either increased security risks or setup costs when Lion-based Macs are deployed. (Editor's note: The actual settings in Lion do not send Apple system data. They do send anonymized usage and diagnostics data, unless unchecked. Apple does not receive user location data, and by default the Mac OS tracks which applications are tracking the user's location and presents that information to the user.)
Full-screen mode full of problems
Another change that is bound to increase calls to the help desk is the new full-screen mode for application windows. It's a great idea, especially for smaller screen laptops. But it's poorly implemented. That is, the icon for making a window take over the entire screen is on the window itself. However, when launched, the icon disappears, so there's no obvious way to reduce the window's size. That would not be a problem if users could move the cursor down to the Dock to make the change as they can in every other situation. In full-screen mode, though, access to the Dock is removed. To get out of full-screen mode a user needs to go up to the top of the screen to display the menu bar, assuming they know how to find it, to see the icon to restore the normal view.
Apple's engineers and their managers seem to be making changes simply for the sake of change, not to improve the user experience. For example, what was once a bright blue scrollbar has become a difficult-to-discern gray one.
Apparently these changes are all being done to force-march Apple's users to a world that blends iOS and Mac OS into a distant operating system dream world. But for now, it's a user experience nightmare that will cost IT plenty in terms of support while increasing security risks.
Here's one more thing
If your users want to use iCloud to help them manage their documents, don't let them. It will only make matters worse for them and you with increased cries to the help desk. To move a document to iCloud, a Mac user simply drags and drops it to the iWork section of their online account. But then it gets weird.
After you place, say, a Pages document in iWork from your Lion-based Mac, you need to grab another device running iOS 5, open the Pages app, and then click on the document in iCloud. Until you do that, the Pages file is dead. This head-scratching process is, to say the least, a kludge.