We have the same problem, although we work over a network ( i know not ideal) getting a PDM in Jan 2010, Its just loses the reference detail. Opening ithe model from the view also will work as it defines the model detail again and up dates.
I think that the drawing side of solidworks needs attention for speed and drawing ability, i work with a old skool design engineer and he hates 3D and loves 2D because he can draw what he wants to represent the part/assembly on the paper. you are limitied to what you can show at certain levels.
