pert:
I don't think it's a high priority but it sounds like if someone would point them in the right direction the developers would probably have a try at a fix.
It's not easy to point them in the right direction. It's sooo hard to pin down. It struck me out of the blue when I was still using XP, for no apparent reason. And look at all the weird and wonderful fixes that have worked for different people.
Interestingly, the comment from the Arduino webmaster indicates that they would also like Create, the web IDE, to support XP:
I can understand this. A great many people still use XP. Not everyone can afford a newer OS, and often even if they could, that also means a new(er) PC to support it. I stuck with XP for that reason - my old machine couldn't run a newer OS, except maybe Vista, and that wasn't an option for me. I would almost have preferred going without. 
(A Win7 compatibility check gave me a 'thumbs-down'.)