>2. Don't know if was just me, but as the conferece
>became larger, the time needed to refresh messages
>didn't let me read must of the posted messages,
>because there was always a new time-consuming
>refresh. Someone suggested that it was because the
>size of the page to reload was becoming larger, so
>maybe showing only a determined number of messages
>on each refresh would help in large conferences

Haven't you notice that this is the way it work right now! :)