Possible Memory Leak Arduino? - memory-management

Question

This is code to run automated blinds. However, it appears that there is some memory leak going on inside of loop as my program will not run. I am using XOBXOB to input data. Look below for where it really breaks.
void loop()
{
Serial.println("loop");
// New XOB request every 4 seconds (if previous response has been received)
if (lastResponseReceived && (abs(millis() - lastRequestTime) > 4*1000)) {
// if the connection has dropped, reconnect
while (!XOB.connected()) XOB.connect();
// Reset timer and response flags. Then, request "XOB" contents
lastResponseReceived = false;
lastRequestTime = millis();
Serial.println("requesting xob");
//enter name of XOB
XOB.requestXOB("XOB");
Serial.println("XOB requested!");
}
// Load response a character at a time when it is available.
// If loadStreamedResponse returns true, a completed response has been received
// Get the "switch" message from the XOB and turn the LED on/off
// NOTE: The message contents are returned with quotes. So, include them
// in the comparison statement.
// Serial.println("LSR: ");
// Serial.print(XOB.loadStreamedResponse());
This is where the loop does not run. It seems that the stream of data from XOBXOB cannot be stored and therefore loadStreamedResponse returns false.
if (!lastResponseReceived && XOB.loadStreamedResponse()) {
Serial.println("requesting reponse");
lastResponseReceived = true;
Serial.println("Get Xob Messages");
//Gets the string from value.
String str_value = XOB.getMessage("value");
Serial.println(str_value);
//Gets the string from switch
String str_switch = XOB.getMessage("switch");
Serial.println(str_switch);
String str_text = XOB.getMessage("text");
Serial.println(str_text);
//If time is not set, get the time from text xob.
if(time_set == false) {
Serial.println("setting time");
// insert code to parse time and set it from the text xob.
time_set = true;
}
// parse the hour from value and convert to minute for wake hour
String string_hour = str_value.substring(1,3);
int wake_hour = string_hour.toInt();
//Serial.println(wake_hour);
// parse minute from value and convert to int for wake minute
String string_minute = str_value.substring(3,5);
int wake_minute = string_minute.toInt();
// Serial.println(wake_minute);
// compare wake_minute and wake_hour with current time
// convert both to minutes for comparison
int wake_time = wake_minute + (60 * wake_hour);
int current_time = 738; //minute() + (hour() * 60);
Serial.println("checking wake condtions");
// rise up blinds slowly if the wake time is + or - 1 minute and if the blinds are closed.
if((wake_time == current_time || wake_time == (current_time - 1) || wake_time == (current_time + 1))
&& blinds_open == false ) {
Serial.println("Natural Wakeup");
rollup_blinds_slow();
blinds_open = true; // blinds should be open now.
}
// Check for opening up blinds condition. Blinds must be closed, to open them
Serial.println("Checking Open Condition");
if (str_switch.equalsIgnoreCase("\"ON\"") && blinds_open == false) {
Serial.println("Blinds Up");
rollup_blinds_fast();
blinds_open = true;
Serial.println(blinds_open);
}
Serial.println("Check closing condition");
// Check for closing blinds condition. Blinds must be closed, to open them
if (str_switch.equalsIgnoreCase("\"OFF\"") && blinds_open == true) {
Serial.println("Blinds down");
rolldown_blinds_fast();
blinds_open = false;
}
}