I find it very frustrating that if I've been performing file operations on one machine and then try and use the mouse in explorer on the other machine, that it'll stop to copy all of the currently selection over to the other machine before it even pops up the context menu and sees if I wanted to paste them.
This happens so often, sure the cut and paste between machines is really, really useful and I use it a lot, but I hate the way it interferes with the context menu. Can't it leave actually doing the copy until I choose paste?