Server is waiting for the client to feed the data. It may be the user is out off his place or waiting for some thing else to influence, his decision for input,....are the odd things we need to eliminate to fool statspack.

Under these circumstances when you take a stats report it would certainly show "SQL*Net message from client" as idle wait times consuming more resources, which actually not and can be ignored.

On the other hand it can also be a bottleneck from the network or the resource. Need to find them where is the exact problem and then trouble shoot.

Resource limits and profiles indirectly assist you in eliminating unwanted waits, and be sure in your analysis towards resource or network bottleneck.