~ # apt-get upgradeReading package listsBuilding dependency treeReading state information... DoneBuilding dependency treeReading state information... DoneThe following packages have been kept back:twitterThe following packages will be upgraded:debinstall latrace2 upgraded, 0 newly installed, 0 to remove and1 not upgraded.Need to get 197kB of archives.After this operation, 57.3kB of additional disk space will be used.Do you want to continue [Y/n]?