I can confirm there are plenty of businesses running various systems on XP. It can get even worse, at work we STILL use XP 32 bit as primary workstations (at least Linux on all servers). I am a Java developer, so routinely I have over 3.5 GB of memory taken, on system that can access cca 3.2 GB max. And we're talking about virtualized remote machines, no real desktops (yes, it's crap). At least at the end of the year, Win7 64b coming.<p>Main reason might not be XP as much as that plague called IE 6. Couple of important intranet apps run only on this. Migration underway, but this isn't apparently such a priority for our management.<p>What backwardish 3rd world company I work for you ask? Well, one not really tiny private bank in Switzerland...