OK - there are a few things that need pointing out.
Firstly, you bot needs to be up 6 hours before it reports it's first uptime data (if memory serves me corectly).
Seconding, have you actualy got the module loaded?
Third. It is possible to block outgoing packets (I aint a unix admin, so I may not be correct). The type eggdrop uses to send the data, is a frequently disliked type, and as such, maybe blocked on outgoing packets. This could be a cause of results not being displayed.