Nope its going to be massively biased, its only relevant if all the OS's were tested on the same cards. It could still be a W7 x64 problem or not, you can't tell from that poll. You'd need an equal sample size from each OS to balance and that's obviously not going to happen in an open poll. Best that will tell you is the ratio of people bothered enough to answer with problems vs those who haven't.
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