At this time (4:48 AM EST, 2013-10-11), minutes after Hacker News changed the parent comment's timestamp from "1 hour ago" to "2 hours ago", these are the updated values:

Repositories: 4,236,957

Code: 962,598,538

Issues: 5,953,084

Users: 4,473,412

So in a space of time probably equal to either 1.5 hours or 2 hours, the numbers changed by these amounts:

Repositories: +694

Code: -149,645

Issues: +889

Users: +749