public boolean checkStalePing() {
        if (lastPing == -1)
            return false;

        int difference = ((int) (System.currentTimeMillis() / 1000)) - lastPing;

        if (difference > BotManager.getInstance().pingInterval) {
            log("Ping is stale. Last ping= " + lastPing + " Difference= " + difference);
            lastPing = -1;
            return true;
        }

        return false;
    }