DCReason
 

DCReason 1.5

Random internet disconnections or Java crashes are problems that a surprisingly large percentage of users face. When this happens in the middle of a game, some witnessing users may get confused or may even take offense at the abrupt leaving. This plugin clarifies the reason for a player's abrupt leaving to other players with a change to the player's exiting message - simply, "Playername has lost connection to the game."

Features:

Distinguishes when a user crashes or leaves the server abnormally
Crash messages can be edited per kind of disconnect (at current, only three kinds of crashes known)

Original Link:
http://forums.bukkit.org/threads/gen...ng-1060.23786/

Looks like this thing was still lingering around. Removing it made our names appear at login again.