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 used to do UD.. I'm going to start again on one of my rigs when I get a chance to test hardware.
I only ran it for a few weeks. I like F@H better. I liked UD's stats tracking GUI, it showed total CPU time and other stats. But there were always problems with their server updating, and it was a lot slower. Stats tracking for F@H is a lot better imo. I'm not sure if UD's servers are still having problems though...
I really find that there is one determining factor for me. If it's a multicpu box, run F@H, as its multiple instance setup works with minimal problems. UD's multicpu setup is anything but idea. Otherwise you can run whatever you'd like, its all a matter of personal preference.