Public pages in authenticated application (NTLM)

I've been using a custome authentication method based on the NTLM Authentication method documented in the [white paper|http://www.oracle.com/technology/products/database/application_express/pdf/apex_ntlm_authentication_wp.pdf] for a while now with no problems.
This basically does the following 2 steps:
1) Standard NTLM Auth
2) Check returned user ID exists in a seperate table containing valid users
I've recently been working on an application where the bulk of the application is restricted to users with relevant permissions to edit the data. However there needs to be a public search facility open to anyone.
I was assuming that I'd be able to do this by just setting the authentication of the relevant page to "Page is Public", however this has presented a problem.
When I run the app as a user which passes both steps above (ie. auth succeeds), everything works fine.
However when I run as a user which fails step 2 above (auth fails) the public page loads fine, but whenever anything is posted I get an error like
Expecting p_company or wwv_flow_company cookie to contain security group id of application owner.
Error ERR-7621 Could not determine workspace for application (:) on application accept. Also this problem only rears it's head in IE (tried in 7&8), everything works fine in Firefox.
Also I've created a seperate application with just the public page (and the application set to use the DATABASE auth (i.e. no auth)) and this works fine.
This is fine as a workaround in this one instance, but i suspect there is likely to be call for similar public pages in other applications, and I don't want to have to create seperate apps for these unless I really have to.
Anyone any ideas about what the cause of the problem may be, or even pointers about where to look?

Try Page properties, Security tab, Authentication setting. It has values: Page requires authentication (default) / page is public. Havent tried though..
Just tried. it works. i manually changed page address in address line like http://something.lt:7777/pls/htmldb/f?p=103:19:3411287399936455. The user connected is "nobody". Public page is page 19.
Simas
Message was edited by:
SimAkas

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