Helps avoid rare race condition. In the future, pieces are cached a while before being written and some blocks are kept in memory so we don't need to read them.
But bug stomping and my Reflex rewrite of NB will come first
Otherwise, they appear to fail.
Rama's test creator vectors are no longer on tracker
This caused v0.0.3 to puke up almost 100 failing test reports over the last few days.