Random "Connection reset" error when calling 2 or more RemoteObject function

I know this question is something difficult to resolve, but I have been walking thourgh sources, googling, etc... and haven't found anything clear bout the problem I'm going to expose.

I have an application that uses php as backend. I use amf as my transport protocol. The problem is that when I do some requests to the server backends through remote objects, randomly, I recive a connection reset on all/several requests. This does not happen when just one remote service request is made, or at least it didn't happen to开发者_如何学Go me. Problem is more visible as more concurrent calls are execute at once.

Could anybody guess what is hapenning from this little info? At first I thougt it was an Apache problem that reset the connection because of a bunch of requests, but I have following requests and I do 3 or 4 concurrect requests, not more.

Thanks in advance for your time.