Original ETA was 164 days for me and it's been reported by others too. So BM goes into panic mode and will stop other work. I would suggest lowering the work queue before adding this project so only get a task or two.
Task times vary. 20k-44k seconds on my 3570k. 211 points for my 20k second task.
Tasks also run past 100% for awhile. Not most of the run time or anything like that.
Of course, I'll do my own research (well, Google will), but what exactly are diagonal Latin squares?
Oversimplified, they're the square pattern of squares often represented by the Sudoku puzzle, with each interger appearing once in each row and each column. Practical application include error correcting code used to maintain the integrity of internet traffic transmitted over power lines.
I grabbed some 2 days ago and they were all _2 or _3 iteration of the tasks. I was afraid they would abort on me so I checked some and many had errors from others. All have completed for me so far but were with version 6. I haven't tried v7.