I am one of those who believes that SlimVirgin is actually multiple people. I base that on scatter graphs I've created of her edit times, which demonstrate a total disregard for human sleep/wake cycles.
Back in April, however, that appears to have changed. Dramatically.
Look at this graph (which I would embed in this post but seem not to be able to do so), paying attention to the stark difference between what was seen before and after the middle of April.
I glanced at what was going on at that time, and found that on the 13th and 14th she was asking for clarification of, and tinkering with, policy on checkuser abuse. Here's an example.
I apologize for being a bit out of the loop on this topic, but could Slim's apparent adoption of diurnality (which I actually interpret as the account being used by just one person) be related to this?