Hi again,
I'm not sure if this is a bug in Firefox or not, but by changing some HTML coding I'm definitely able to make the guestbook appear nice. Firefox is getting more and more users every day so UltraGuest.com is for sure going to support it.
The reason why I haven't fixed it yet is that I'm working on the new verison of ultraguest and (while I have been talking about this new release forever now) it is actually not far away from being released.
