Hi.. sorry for my late answer but I was in my holiday's week
Here I am now...
so here the information:
the eBox version is the 1.5 on Ubuntu 10.04
those are the versions of packages (I just see that there are some updates)
Zentyal - Common Library 1.5.8-0ubuntu1~ppa1~lucid1
Zentyal - Core 1.5.12-0ubuntu1~ppa1~lucid1
Zentyal - Firewall 1.5.5-0ubuntu1~ppa1~lucid1
Zentyal - Network Configuration 1.5.6-0ubuntu1~ppa1~lucid1
Zentyal - Network Services 1.5.3-0ubuntu1~ppa1~lucid1
Zentyal - Software Management 1.5.4-0ubuntu1~ppa1~lucid1
Zentyal - Users and Groups 1.5.7-0ubuntu1~ppa1~lucid1
I didn't mention it, cause I don't think it is directly related eBox issue
I didn't use "user corner", cause I configure my eBox like a simple as possible proxy/firewall