I think this is a bug for icloud on PC

Question

My icloud's photo stream didn't work although I had finished the setting steps on guide.
And there is one thing that I think strange.
I logged in icloud, with my apple ID on my PC(windows 7). Enable the photo stream option, and then I logged out.
At the next time I login, using the same ID on the same PC, strange things happened. The photo stream option was in the status of disable.
I think icloud might failed on storing the user's setting on windows 7.

Answer 1

below is the two Constructors Of String
    public String(String original) {
     int size = original.count;
     char[] originalValue = original.value;
     char[] v;
       if (originalValue.length > size) {
         // The array representing the String is bigger than the new
         // String itself.  Perhaps this constructor is being called
         // in order to trim the baggage, so make a copy of the array.
         v = new char[size];
         System.arraycopy(originalValue, original.offset, v, 0, size);
     } else {
         // The array representing the String is the same
         // size as the String, so no point in making a copy.
         v = originalValue;
     this.offset = 0;
     this.count = size;
     this.value = v;
    }=====================
    public String(char value[]) {
     int size = value.length;
     char[] v = new char[size];
     System.arraycopy(value, 0, v, 0, size);
     this.offset = 0;
     this.count = size;
     this.value = v;
    }I don't know where has the problem.