Find a member who hasn't been online in a long time, and view their profile. Under their profile picture and post count, there is no "Last Online" date.
A "Last Online" date. :P
I'm pretty certain this is true of all users who haven't been online since the migration to Huddler. But in that case, can we get some generic information instead? Maybe the date of their last post (or join up date if they have no posts)?
With it empty, as it is now, it can look more like a bug, with random users not having that info. It's simple enough now to say which of those users were pre-Huddler and which weren't, but down the line, it's possible not all of us will remember. Plus, there could be other bugs with this section in the future, that might be masked by this bug.
In this case, putting his "Last Online" to 11/5/10 (date of his last post) would be a lot better than having nothing.