Hi, I'm having some trouble upgrading from Intrepid to Jaunty. I had clicked the upgrade button in the update manager and it seemed to be going fine, but while it was downloading the required packages I lost my connection to the internet and so it was abruptly stopped. When I regained my connection I went back to upgrade it again but the upgrade button was gone. I've tried restarting, deleting my update cache, and combinations of these but I can't get it to come back...so I'm not really sure what to do.