I have installed Magento 1.7.0.2 on Ubuntu 12.0.4 server and everything works.
Testing REST API with an admin role (http://1.2.3.4/magento/api/rest/products) I get this result:
<magento_api>
<messages>
<error>
<data_item>
<code>403</code>
<message>Access denied</message>
</data_item>
</error>
</messages>
</magento_api>
I have created an admin role grant all access on all and the token authentication procedure was ok.
I've tried with magento go service, Bitnami VM and Windows installer but seems that web services are not present (I can see only user/role under Web Services).
Did you know of a magento setup with REST API working?
How can I debug this kind of error? I have tried with different REST client.
Thanks!