Uno+WiFi Shield: sometimes not able to read returned HTTP data from client

SurferTim:
Some of the OP's problem is here.
The server responds with http error 422. You can Google search for that and get part of the answer.

Hey, thanks for the reply. But the 422 error doesnt matter. I am running the server, and I know the status code is returned as a 422. Thats because its making a request thats actually forbidden by a database rule I wrote for that page. So thats actually a good thing. And just to clarify, I omitted the actual address of the GET request from my post because I am not allowed to share the URL of the page I am working on due to security concerns and company policy.

The actual problem is that SOME of the requests return a 422 while others do not return anything while still showing up on the server logs.