Greetings to fellow denizens of the land of NOD! I recently installed 2.5 on the family's older Celeron 1.1 GHz with 256 MB RAM running XP Home under three user accounts. NOD replaced an Internet Security Suite that also begins with N. No, this is not a tale of "after installing NOD32 it found 1300 trojans, viruses, and worms that the previous #%&*$ bloated av missed." Actually, the last scan by the old av found zero badies and an in-depth full scan by the newly installed NOD found exactly the same amount. Rather, this is a tale of recovering the usefulness of a computer that had become so slow over the years with successive upgrades of said security suite from 2002 to 2005 versions that it may as well have been infected with 1300 malwares. Even my ever more frequent file and crap cleaning and defragging was having little effect at speeding up the tired old box. Enter NOD32 (crank up the volume here! - play Rossini's William Tell Overture!). Yes! NOD returned it to a quick responsive machine again! Fast at booting and switching users, more powerful with freed-up precious RAM, able to access the internet in the blink of a jolly green eye! And since I had replaced a suite, I also installed NetVeda firewall, another remarkably efficient piece of work, and lo and behold! the quickness remained! Summary Evaluation: Installation - Fast and easy, nice set of default settings. Detection rates - Heck, what do I know? only the tests I see that show some av's marginally higher. Heuristics - NOD's forte of course. Regained pleasurable use of computer - Priceless.