this might be a bit off-topic, but ...
thanks for the tip on Kerio !
i was using ZoneAlarm on my laptop and Outpost 2.5 on my desktop at home. very happy with OP, but ZA started to annoy me when vsmon.exe started using almost 100% cpu during downloads (with Firefox).
going to try Kerio 4.1.3 ... looks nice ;-)
only thing i "miss" in Kerio (and ZA) are the rules that you can define for applications.
edit : oh wait, you can "create advanced filter rules" when setting up a new app. in Kerio ... i'll have a look.