A client device sends a request to a server via a network and times a request time duration while waiting for results to be received. The client further times an operation time duration substantially corresponding to a period of time that the client device is performing an operation that causes the client device to make the request. After receiving the results from the server, a processor of the client is operable to dynamically calculate a client processing time threshold at least according to a type of the operation and historic time durations for one or more previous operations performed by the client device. The processor further subtracts the request time duration from the operation time duration to thereby calculate a client processing time duration, and transmits one or more alert messages to a network operation center when the client processing time duration is greater than the client processing time threshold.