The speeds go up and down based on share rate. The rigs are hashing at 8.85MH consistently through the whole lease. You see this sort of thing with any pool. I have seen 40MH and sometimes I see 3MH. Early on the connection died but it wasn't from the rigs. Most likely from the pool. I received an email that the rig is down but unless you send me a PM so I can get an email notifying me of a message I can't constantly check this page. The rig was also connected to your pool for 7 more hours after your lease ended as an added BONUS. Once I rceived the email that the connection was lost, i looked at all my rigs and they were fine. I restarted CGMiner on all of them and regained connection to the pool.
There are pool disconnects all the time and it can't be blamed on the rigs. Service was down for 20 min but you got 7 extra bonus hours of hashing.