M_Bison - 11:15 am on Nov 6, 2006 (gmt 0)

I don't think it is a canonical issue: my own site uses www.mysite.com throughout (no instances of mysite.com or www.mysite.com/index...), and has come and gone several times.

yes, but have you linked to index.... within the past year? For my site, when "Pages from Australia" is selected, it returns a heap of previous supplemental results which haven't been redirected or 404'ed - eg http://www.example.com/blah/?id=xx. as opposed to http://www.example.com/blah/ which is the current link.

Without "Pages From Australia" the site command returns the proper results.