I looked through the port activity log for last night and nothing stands out. I see the following messages repeated all the time, all day long, every day:

=>NET 0:34.52.66 Admin error detected: (20,0) Connection reset
=>NET 0:34.52.66 Connection open
=>NET 0:44.52.00 Admin session connected
=>NET 0:44.52.00 Admin remote close detected
=>NET 0:44.52.00 Connection release
=>NET 0:44.52.00 Admin error detected: (20,0) Connection reset
=>NET 0:44.52.00 Connection open
=>NET 0:54.52.06 Admin session connected
=>NET 0:54.52.06 Admin remote close detected
=>NET 0:54.52.06 Connection release
=>NET 0:54.52.06 Admin error detected: (20,0) Connection reset
=>NET 0:54.52.06 Connection open
=>NET 1:04.52.67 Admin session connected
=>NET 1:04.52.67 Admin remote close detected
=>NET 1:04.52.67 Connection release
=>NET 1:04.52.67 Admin error detected: (20,0) Connection reset
=>NET 1:04.52.67 Connection open
=>NET 1:14.52.79 Admin session connected
=>NET 1:14.52.79 Admin remote close detected
=>NET 1:14.52.79 Connection release
=>NET 1:14.52.79 Admin error detected: (20,0) Connection reset
=>NET 1:14.52.79 Connection open
=>NET 1:24.52.47 Admin session connected