I can't submit answers anymore.?

I'm currently a "TOP CONTRIBUTOR" in Physics. So I know how this works. But I haven't been able to submit an answer for about 1 week. I can bring up questions, but every time I click "Answer Question", I get a screen with this message:
The page you requested is secure, and you are not logged in.

The page welcomes me by name: "Welcome, sojsail", so I think that means I actually am logged in. Do you know what triggers this message?

About the time this started, Incredimail sent an update. Perhaps the incredimail update is the cause, somehow, or perhaps it's coincidence and yahoo recently made some change that affects my computer this way. Any suggestions?

2010-05-08T15:06:46Z

This started a week ago. I've been up and down several times over that week.

Son of T32010-05-08T16:32:20Z

Favorite Answer

You can try this, it may help.

1. Log off YA
2. Clean internet cache files and cookies
3. Delete all temp files
4. Reboot your computer

It has worked for others.

B.2010-05-08T22:01:17Z

Do a shut down and restart and it should work for you again.