No new hardware or software added to my system recently either. Sorry alcattle, I played 3 hours last night and it didn't happen so I wasn't able to check my latency at time of disconnect. All my clients currently sit between 65ms-79ms currently while farming netherwing ledge. Like I said it, it just started about a week ago and it's been fairly random.

Thanks everyone for the replies. Due to the random nature and how recent this started I wasn't really expecting to find a solution although there have been some great replies and troubleshooting tips. I was really just curious to see if it was happening to anyone else.