Upgraded to 1.2.1 today and one of my users is lamenting the lost of the Manage > Referers screen, which looks to give users a list of the referring URLs for visitors to their blogs. The relevent file seems to have been deleted from Trac around a year ago and the comment at the time mentioned only cleaning up. I was wondering if this functionality was moved somewhere else or otherwise changed, or whether it is just gone completely.
I think it's gone. You can probably still use the old plugin though. I've had something developped to replace it myself, it needed replacement because it was logging soooo much information. Half of the time spent to generate a page was done on that old referer plugin and its too numerous queries. Plus the tables quickly grew big in sizes, for some blogs they were more than 300MB. If you plan on slow traffic you can probably reuse the old one, but if you have a lot of visitors you'd probably need to tweak it / replace it completely. If you reuse it at least make those tables varchar (they're char by default) to make those tables smaller.