I read Reverend's sticky of 9/8/04 on this and from there clicked the Release Notes link. But I did not find there the specific limitation that XP's firewall leaves me vulnerable to. (I have been using my XP firewall btw.) A friend warned me of this XPSP2 limitation but could not specifically name or describe it.
If someone could clue me in and give me his take on whether I can reasonably continue to use XP's XP2 firewall or whether I'd be safer with the free version of Sygate or ZoneAlarm, I'd be most appreciative.