Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I just picked these up and so far I'm not experiencing the same problems that you are having. I am running Windows 7 Ultimate 64 bit with the latest software from the Logitech site. Sorry about your problems but I don't believe it's a Windows 7 problem.
With the Kindle app, my iPad has now replaced my first gen Kindle. Implode, Mirror's Edge and Flight Control HD are fun games. SugarSync and GoodReader are useful apps as well.