I got it working again. Looks like they now expect

'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*
+;q=0.8',
[download]

as a header field. I however am plugging in all the http headers that firefox uses for my pages of interest so that I don't end in this trouble again.

Thanks and Regards
Uday