If you consider that a socket connection is quite faster than a TCP/IP connection ...
Well one has to be more precise. One has to distinguish between a local socket (IPC socket, unix domain socket) and a networking socket (e.g. TCP socket). Local communication is faster (at least it should be) than remote communication.
As discussed above, the minthreads/maxthreads values of the configuration are not reasonable (not sure what you were trying to simulate/measure/...). I have certain doubts, that the memory was "corrupted", but i have no problems to believe that several processes crashed on your system when it run out of memory. For running large applications one should become familiar with system monitors that measure resource consumptions. This way one can spot shortages and adjust the parameters in reasonable ways.
