I'm having the same problem: I found this site through Google, was pleased to register because it looks invaluable to me in my new project, and tried to go read the article that had brought me to the site in the first place. But it wanted me to register (again) before i could see the article. When I click away to other pages on the site, the top banner greets me by name, so I AM registered. When I Search the site for my subject and go to one of the matches, the top line shows me as unregistered.

My suspicion is that the code is not actually at fault, but that there's something about my cookie permissions that's confusing it. The system I'm using has some odd quirks in its permissions structure that causes some eccentricities - for instance, a number of blocks of text on EBay don't display, HungerSite.com won't display its ad icons, etc. Mostly things work as you'd expect, and I haven't spotted the difference by screen to screen comparison of security options with my other system, but I'm pretty sure that's what's at work - especially if only a handful of us are having this problem. Could someone spell out the exact cookie requirements for SqlServerCentral so I/we could experiment?