Hi, I have been pondering whether to purchase TDS or not. My protection is deviced in layers, and I have yet to get infected by a viri/trojan/worn/whathaveyou. However there are so many more embedded trojans lurking on the net, that I am considering adding a new layer of protection, and that would be TDS. My question is this: Is there any known compatibility issues with any A/V package (I run KAV4), or port protector (I use PortbusterXP), or with any firewall (I am currently using ZAP, but I will soon ditch it and move to a rule-based one)? Also, running TDS in real time is it going to deteriorate the performance of my system? My system is XP Pro SP1 with 1GB of DDR RAM powered by a P4 @ 2.5Ghz.