I don't know why. But you may try type sudo synaptic in the terminal. loveboy wrote: > * Hi, > > When i used Synaptic to upgrade my software, i got the error: > > Failed to run /usr/sbin/synaptic as user root. > Failed to communicate with gksu-run-helper. > Received: > Could not connect to database > While expecting: > gksu: waiting > > What's wrong. Any one can help me * >