Thanks to both of you for quickly responding! Sorry it took me so long to come back - I'm doing some volunteer work for The Forward Climate Rally in D.C. on Feb 17 so was pretty tied up.
I tried all of your ideas except changing my email addy. I've had it for as long as I've had email and don't want to loose it. If I try to close it and reopen under the same one I'm told it's in use.
I was able to get it to stop by going to manager but as soon as it came back, yep, it continued trying to dnload. SO frustrating esp. since it eats up battery time but guess unless someone has another idea, I'm just going to have to put up with it. If it was my computer I know a place that repairs those problems, but as far as I know, there isn't a place like that for my phone.