I can't seem to find anyone else who's experienced this issue, but I'm working on a drawing which freezes every time I zoom in past a certain level. It looks like a graphics issue, but then I don't have the issue working with any other drawings, even larger and more complex ones. Besides, it's not like I have particularly bad hardware (Intel Xeon @2.8GHz with 8GB RAM and NVidia Quadro K600 running on Windows 7 Pro). I've purged and audited the file to within an inch of its life and no issues to be found. I've reduced the use of complicated blocks and removed all xrefs and images, I've brought the file down to a really decent size - nothing.
I'm no beginner but can't think of anything else to try. Anyone got any ideas?