LWIP-Stand-Alone crashes

For some or other reason after receiving 32 UDP packets the ENTIRE LWIP networking stack stops responding – no UDP no TCP to ICMP nothing. It does not seem to matter what size the packet is. Is there any way to reset the pbuf address / count?

Here is a code snippit that shows what the udp_recv(…) does.

static void udp_client_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, struct ip_addr *addr, u16_t port)
{
  int i;
  static int remainingframesize = FRAMESIZE;
  static int totalcopied = 0;
  
  while(remainingframesize > 1)
  {
    remainingframesize = remainingframesize - p->tot_len;
    for(i = 0; i < p->tot_len; i++)
    {
      printf("%c",*((char*) p->payload+i));
    }
    break;
  }
  if( remainingframesize < 1)
  {
   printf("\n\nENTIRE FRAME RECEIVED. %d chars remaining" 
          ,remainingframesize);
   remainingframesize = FRAMESIZE;
   totalcopied = 0;
  }
}
/*-------------------------------------------------------------------*/
void udp_client_init(void)
{
  struct udp_pcb *pcb;
  struct pbuf *pbuffer;
  
  /* Allocate memory for the structure that holds pbuffer. */
  pbuffer = mem_malloc(sizeof(struct pbuf));
  
  pcb = udp_new();
  udp_bind(pcb, IP_ADDR_ANY, 1234);
  printf("\nport 1234 is now open\n");
  
  /* Tell UDP that we wish to be informed of incoming data by a call
  to the echo_recv() function. */
  udp_recv(pcb, udp_client_recv, NULL);
  
}
/*-------------------------------------------------------------------*/

If anyone has any ideas on how I could receive a 1MB file using UDP. Any suggestions would be really great. If anyone has an idea of the bandwidth that I can expect using UDP from LWIP-Stand Alone that would be nice too.

Thanks in advance.