I got a workunit on this, and I use 6.12.7. After about 180 hours of crunching, I got the following:
12/16/2010 4:16:26 PM | PrimeGrid | Computation for task llr_sob_47471171_4 finished
12/16/2010 4:16:26 PM | PrimeGrid | Output file llr_sob_47471171_4_0 for task llr_sob_47471171_4 absent
I'm a cruncher, not a code whiz. Seems to me that I'm going to get nothing from this. Credit's not my deal, but other projects went wanting.