Since the day before yesterday, when I try to click something as a Guest, I got this page:

At the top:
“This menu has been disabled”
Below that title are the following:
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Board Message
Sorry, an error occurred. If you are unsure on how to use a feature, or don't know why you got this error message, try looking through the help files for more information.

The error returned was:
Sorry, but you do not have permission to use this feature. If you are not logged in, you may do so using the form below if available.
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Only when login I can access the forum. But then I see a lot of Guests in the forum. What could be wrong??
This problem is not only from one PC, but from a few others.
Do some other users experience the same problem?

Wrong forum. Post it in the forum issues section.

Also, it appears to be a known issue with the forum, and the Admins are trying to fix it.

the_guy

Thanks the_guy.
As I am using Win98SE, I though it may be Win98 issue.
Anyway I have reposted it in the forum issues section as you recommended.