I think google have changed their map sites. All other sites that refer to mt.google.com and kh.google.com show the same symptoms as Maemo Mapper and manual typing of what-we-should-now-probably-call-"old" urls.

A quick look at the javascript in maps.google.com reveals new hostnames mt0.google.com and such, but with urls that appear to have a different naming convention (at least for the magic n= and v= arguments.