No there are problems, I have a few clients (on different servers) that have this problem with no stats being shown on the recent activity tab, but the others are fine -- the line of code you provided, and running update again does nothing
There are other bugs with this Centova v3.1, many clients also report that titles/artist names are no being displayed in the media players like Windows Media Player, iTunes, Realplayer... the new pagination is not right either, sometimes not all streams are shown, sometimes reseller accounts are not displayed.
You all should have never released this as stable, what happened to the beta versions being released first?