I've been finding all sorts of niggly issues with sw06 - the subtle things you wouldn't notice until you've pumped out 100's of drawing pages.
I was editing a sketch of a part in an assembly. I could see the sketch but if I zoomed in it would dissappear - still there - but invisible. The workaround for me is to open the options window, then close it - forces a redraw at the new zoom level and so the sketch shows up again. It's kind of embarressing to have issues like this.
Other things I'm finding are hyper-sensitivity trying to select edges for centerlines or dims in drawings, as well as the already spr'd issue of note and balloon arrow placement.
I can use all these great tools to create an awesome model in a few hours then spend 10 minutes trying to create two centerlines or creating hidden layer geometry so I can get a dim on an edge that sw is not fond of.
My var doesn't crank out enough stuff to understand how debilitating some of these things can be.
Zander