Had to open my mouth and post... Had a minor problem two days ago, had some new incoming links and didn't notice, outgoing links fell too low and outgoing value crashed. Managed to recover the next day, but was then hit by a few blogs unlinking from the roll, also some lesser blogs delisted, meaning slow going for a spell while things rebuild.
More blogs linking in today, caught this early and was able to link back before reindexing, but the roll is very unstable now, too many changes happening at once, not enough value being looped back in. The new blogs are going to have to stabilize and start putting out more value before we can keep building.
I can temporarily hold some of this back by keeping my blogs from being indexed with local firewall controls, to keep anything from losing value, but I can't control the other blogs in the roll.