Two days ago i was tryin to upgrade my ubuntu box from hardy to intrepid using update manager. First, I try to follow the instruction that i found here. But my update-manager didn’t show any upgrade button. Then I try to upgrade all of my packages, hoping the button will miraculously show up afterwards. But still, after the package upgrade is finished, the release upgrade button is still not there.
After some googling, i’ve found that calling update manager from command line using “update-manager -d” solves the problem. Thanks to the guy who write this trick here
