ajax post does not send data
===

I have this ajax-post:

    $.ajax({
      url: Config.Proxy + "ContentPages.aspx?t=save",
      type: "POST",
      contentType: "application/x-www-form-urlencoded",
      data: {
        content: content,
        id: currentPageId,
        active: "true",
        subject: $('#txtSubject').val(),
        webid: webid
      },
      success: function (data, status) {
        // do something
      },
      error: function (xhr, desc, err) {
        // Do something
      }
    });

I do a post to an .NET page, so I could use the debug mode to check if the data is send correctly.
I use the same code as above for a different page (other url, other data).

When I run the application and save the data I don't come in the debug mode. When I use the same code for the other page, it works fine.

I tried to compare both codes, but they are the same. I have removed some data-items, but it still does not work.

Why? Can anyone give me a hint?

Thanks