Achernar - 9:30 am on May 1, 2007 (gmt 0)
I did some experimenting, and if a text/xml content-type is returned, it does get populated
The problem could then be with IE which is sometimes very picky on what it accepts.
A couple of days ago I had a problem with getElementsByTagName() that returned nothing in IE ; all this because one letter in the xml document was not encoded in the correct charset. ;)