With the new release of Apple Mac OS X Lion, there are a lot of changes on the kernel and backends. Therefore I don’t think it’s possible to do port upgrade on Macports in order to upgrade your existing or installed ports in OS X Snow Leopard. (more…)
OS X Lion Hot Corner configuration preference no longer available on System Preference panel. It’s because of the Mission Control is designed to replace Exposé and the behavior of view All Application Windows. I was also thought that OS Lion has removed hot corner at the first place.
OS X Lion Hot Corner feature is not missing, don’t worry about it 
It’s now “reside” at Mission Control preference. You can see it at the left bottom when access to Mission Control preference panel.
OS X Lion Hot Corner preference has added two new options, Launchpad and Mission Control. Which is expected since it’s the new features for Mac OS X Lion.
