Playing v.1.47 I have encountered a number of bugs, but only one is seriously annoying. It happens in the battlefields (at least it has through Acts I and II).
After I have saved a game in the battlefield, if I restore that save or any subsequent save (even if the save is made in the main Act area) and return to the battlefield, my two maps – minimap as well as level map - are blacked out. Fortunately to restore the areas I have explored, I do not need to re-explore the entire battlefield. I just need to scroll the game screen around (the game screen does not black out; only the maps). Still, the act of scrolling takes a couple of minutes and it is tedious.
If I stay in the battlefield without leaving or without restoring a save, the maps fill in and stay filled in properly. The map blackouts occur in the battlefield dungeons as well as the battlefield surface area, but they occur only in the battlefields, not in any of the Act levels.
My system: Windows XP SP 2, AMD FX-55, two NVidia 6800 Ultras in SLI, 2 GBs of RAM, 4.092 GB virtual memory, Audigy 2 ZS, Logitech MX-518 <img src="/ubbthreads/images/graemlins/badsmile2.gif" alt="" />