+1. The firewall log could REALLY use a delete button (delete selected, delete all). Some kind of ability to classify/sort the data would be useful too (ignore local traffic, sort by type etc).
Also, in Network Connections you can right click entries and choose between "Get details" and "Trace". This would be VERY handy in the firewall log section also!
Finally, a "kill connection" option (with the option to block now, or forever) should really be present in the Network Connections section, yet it doesn't seem to be?