I am thinking about a reinstall as well. Unfortunately when my raptor crapped out on me it broke my raid and my 8 characters all 50th+ gone...
The cool thing about this game vs. diablo when playing mutli is the monsters scale really well with the more people that join, the XP and treasure increases as well.
i7 930 @ 4.2Ghz
GIGABYTE x58 UD7
Kingston HyperX T1 Series 12GB
GIGABYTE 7970 (1280/1800)
OCZ Vertex 2 100GB SSD & VelociRaptor 300GB