Non-absolute URLs don't work on Opera. This is a combination of an Orion bug, and Opera's strict handling of the servlet spec.

Fowarded email containing more info:
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I've got an answer from Opera which indicates that you should be home free if you correct your
Content-Location Header. It is actually Mozilla and IE that is wrong

See the message below.

/max

Why is it that on

> http://opensource.atlassian.com/projects/hibernate/secure/Dashboard.jspa
>
> the link "ALL" has a relative link to "IssueNavigator.jspa" in the source, but Opera 7 resolves it to:
>
> http://opensource.atlassian.com/secure/views/IssueNavigator.jspa?reset=true&mode=hide&pid=10000
>
> Which is of course wrong. Opera 6 doesn't do this.
>
> It should be
>
> http://opensource.atlassian.com/projects/hibernate/secure/IssueNavigator?reset=true&mode=hide&pid=10000
>
> Mozilla and IE resovles it correctly - so what's wrong here ?
>
> The folks behind JIRA has been informed about this and are probably going to change their JIRA impl. to handle this for Opera 7 clients, but
> isn't this a bug in Opera that needs fixing preetty damn soon ?

They are sending a Content-Location header

HTTP/1.1 200 OK
Date: Tue, 06 May 2003 16:11:22 GMT
Server: Orion/1.6.0
Set-Cookie: JSESSIONID=**********; Path=/
Connection: Keep-Alive
Keep-Alive: timeout=15, max=100
Content-Type: text/html; charset=UTF-8
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Location: /secure/views/dashboard.jsp
Transfer-Encoding: chunked

which imply that the Base URL is based on

http://opensource.atlassian.com/secure/views/dashboard.jsp

not
http://opensource.atlassian.com/projects/hibernate/secure/Dashboard.jspa

Which is the behaviour described in RFC 2616 sec 14.14 :

"The value of Content-Location also defines the base URI for the
entity."

Opera 7 uses this value if it is present and no Base URL declaration
is made in the document.

IOW: This is not a bug, it is a feature.

BTW: What is so sensitive about that page that they have to use a
"no-store" Cache directive to force the client to use RAM cache?
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Orion Bug:
http://bugs.orionserver.com/issue/view.jsp?id=1083

This should be resolved by adding a base URL tag, or making all links absolute.