I wasn't sure about the numbers, but it was like that pre-wipe.
The week before the wipe I messed around in NCR a bit, bursting people like Jack Raven, and saw my negative rep increasing with 60-100 a day.
I'm not sure, but I don't think you rep increases during the period you're logged in, unless you do something to increase it yourself.
At least it didn't seem to do that pre-wipe.