* for a rainy day

	fix: correct transfer rate calc. for resumed transfers

		howto reproduce:
			1) % ./run.py < test-urls/stage6.url
			2) wait that transfer begins
			3) wait some more but without letting the transfer complete
			4) hit ctrl-c
			5) % ./run.py < test-urls/stage6.url
			6) now watch that transfer rate go berserk
