A read operation on a large object failed while sending data to the client

A few days ago, in one of my servers, I had the following alert pop out: > A read operation on a large object failed while sending data to the > client. A common cause for this is if the application is running in > READ UNCOMMITTED isolation level. This connection will be terminated. However, it has only happened once, and I could not deal with it there and then. where/how could I search for more information as to what was the primary cause(s) that triggered this alert/message? **Edit** Actually this question could be something down these lines: what should I query at the time the alert was fired, to add more information to the email the DBAs get?