@ikir
The simplest way (which I believe allow you to crunch faster since the Dnetc client do not need to fetch blocks by itself) is to manually fetch it...
For this, send an Email to fetch_at_distributed.net
and in the body put:
numblocks=1000
contest=OGR
.. After a few minutes (secs ?) you will receive the file to put in your dnetc folder with 1000 blocks to fetch !
Replace the file before it reaches 0 !
Jerry