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 doubt your motherboard will support it so you'll have to consider the purchase of a new motherboard for a new cpu. If you find the performance worth enough, then yeah.
It depends, what do you do more, play games or do other stuff? If it is just games, I would recommend waiting and getting a DX10 card. If it is a lot of media related stuff (especially music and video encoding) go with the Conroe.
Or... you could just wait till the faster Conroes, or even Quadcore come out, your processor is very capable as it is. I am still making do with a 2.4 Ghz single core P4, but I am definately going for Conroe as my CPU is not nearly as nice as yours.