No, power saving is active.
I'm trying now without claws and the corresponding ssh tunnel (i.e. just the browser) to see if it lasts longer (though the battery applet is flip-flopping constantly between "2 hours left" and "1 hour left").
edit: anyway power saving only works when there'ss nothing to transfer, in another thread I explained how wifi sucks around 50% cpu when wgetting a file.