Not our problem any more Scott. We moved to Hampshire in December 2010
Roundup is/was available in the northeast area though, but I never got to try it.
I sawed the sycamore to ground level, but didn't put any other form of treatment on the stump. It had started to grow again before we moved.
We don't have that problem here, thankfully. I don't mind looking at sycamores in the wild, just not in my garden.
There is a mixture of shrubs in our new garden, but no trees. There are several oak trees around us, which I think is gorgeous, as we like oak trees.
A lot of oak leaves get blown into our garden, but I've recently acquired a new gardening tool to deal with them - a leaf blower/sucker-upper/shredder
We've also got ourselves a nice composting bin, so the collected leaves won't get wasted.
I'll be starting a new topic soon for our Hampshire garden, so you can follow the progress with our other members
Laurie.