you can't go back more than 900 periods at your chosen (lessor) interval.
Indeed, 900 intervals is often too small when one wants to see what exactly happened at certain past events.
On the 1 day charts, in particular, one cannot get the whole history of MtGOX (it started 2010-07, according to the 1w chart, but the 1d chart cannot be scrolled back before 2012-07). In trend analyses, 1d intervals are almost standard.
Would it be possible to increase that limit just for the 1d chart, so that the whole history of MtGOX can be examined?