I'm guessing you read that in a customer review. Logitech is a massive company with a good reputation to maintain. I'm sure there will be nothing wrong with the software that comes with the webcam.
One person has had a bad experience (which may not even be the fault the camera) so they've decided to submit that. Take such reviews with a pinch of salt.
Here are 2 customer reviews I found on ebuyer click here. Both are using XP and report no problems if their computer getting "trashed".