I have Windows 7 64-bit premium, Norton, Internet Explorer 8, and the premier membership. I have not had any issues with any redirects, trojans, or other stuff - except on one occasion.
I just loaded Win. 7 on our livingroom computer, and was setting up the favorites and what not, so I pulled up SMF and went to log in and it pulled up the full page virus alert spam/trojan. So I hit Ctrl+Alt+Del, killed Internet Explorer, then started again. The second time it let me log on just fine with no issues.
I noticed a couple of intersting things about this. The redirect page popped up as soon as I started to enter my user name, I didn't even get to my password or even finish my user name for that matter. Second I have all the PC's I use set so that SMF remembers me and I don't have to log in after that. I have noticed that a lot of the complaints seem to be when people are logging in, might mention that to Huddler.