Hi my specs are winxp pro sp3,all up 2 date/4gb ram/3gb CPU. I upgraded from NOD32 v4.0.437 to v4.0.467.After a day or two of using,with no probs,i suddenly started getting system hangs,when turning on my free agent usb drives. After browsing around the net 4 hours,someone suspected it was the lasted vs of nod.So i took off my AV,cleaned out my reg,& sure enough after a reboot,i turned on my usb drives,& no more hangs.re installed v4.0.437,still no probs. Just thought id post this in-case anyone else is getting the same problems. Sure hope this helps.