After spending a day investigating the possibilities we have come to the same conclusion that using the web services to update items with anonymous access is not possible. Something Msft should resolve as you would expect that web service would inherit permissions you set in the site. We however are determined to get it to work and will be looking further into it through custom development. We are waiting to be upgraded to the next wave and will re-engineer our public website design to fit into the new publishing features including using jquery to update items and work around all the silly stuff msft has thought up.
Keep you posted or send me direct mail for more info.
Xavier
Keep you posted or send me direct mail for more info.
Xavier