I couldn't agree more with you on this one... I was also talking about UI not GUI, but while I was there, I also mentioed GUI as well.
I totally agree, Kerio became so easy to use and still it's quite configurable, so something for everyone I guess. It's just makes me so angry when I see no one is doing anything regarding those GUI problems because it's not just ugly, but annoying as well... sometimes whole GUI freezes for let's say 30 seconds, but the good thing is... only when Azureus or Limewire are up and running. I have no clue why, but I've seen so many reports regarding that and still no solution on horizon.
I just hope Sunbelt will do something regarding those little issues very soon. It's too good firewall to be abandoned just like that, right ?
Cheers !