Problem with this poll is that the use of different OS is not spread out evenly. If we assume that the problem appears on all systems, the only result we can conclude is that half the people don't have a problem, and 1/3 of the people with problems run 7 64 bit. This does not neccesarily mean 7 64 bit is more sensitive to the problem than other OS, it could also just mean there are a lot of people running windows 7 here .
To get conclusive results, we'll need another poll in the general forum asking everyone what operating system they use (if it doesn't exist already). Combining both numbers should give an estimation of each OS's sensitivity to the problem.