Limit your upload speed in the local prefs to 84KB and you'll be surprised to see that net it will go much faster. From here it takes 4 to 5 minutes per *_4* result file which are somewhere in the range of 23-24MB for the present work units.

Nothing is obvious to newbies like me

set this in your cc_config.xml

<max_file_xfers_per_project>1</max_file_xfers_per_project>

so the contents of cc_config.xml look like this:

<cc_config>
	<options>
		<max_file_xfers_per_project>1</max_file_xfers_per_project>
	</options>
</cc_config>

I made the change on my ubuntu cruncher. Went to my win7 box to do the same but don't see a cc_config.xml file. Can I add this under win7?

I did the change on both ubuntu and win7 box. Did not work. Still uploading 2 at a time. I did shut down boinc when I did the change so it should have took when firing it up. With ubuntu, this line is with another for ubuntu 64 to be recognized. I put it after.
Had to limit my uploads on the 8 core running this project to midnight to 7 am. Can't get on the net with another pc while this is uploading. Will see if that works. Otherwise will limit to one at a time.