This baffles me again and again.
Vista was supposed to be better than XP. Didn't work. Now W7 seems to be much more accepted by people from what I've heard, and should have been fixed where needed.
What does the IDE do when verifying? I suppose it just runs avr-gcc and of course some java stuff. The serial ports shouldn't be probed, but I'm not sure. All in all very standard stuff for every kind
of OS. Java and avr-gcc are ordinary programs, not drivers. In theory (yes, I know...) they shouldn't be able to bring down a modern OS.
I tend to blame MS, but that's a very old habit of mine. I wish IBM had pushed OS/2 some more.