Krileon, that's a key question for me. I get an average of 5,000 visits a day, and maybe a dozen indications of login problems per week. Figure ten times as many that I don't know about. Maybe Facebook and Google get the same ratio of users who have problems logging in, and I just don't know about it. I'm not sure, but I'm open to that possibility.
Can I ask one last favor? can you please take a quick look at my site
www.janglo.net and try registering and logging in, and look at the source code and whatever else and see if you see anything that looks fishy. I assume you are familiar enough with the code that you could spot issues within a few minutes. If you tell me that the cookies and login code look normal, I could drop this topic and never think about it again.
Thanks.