IE 6 and 7 being detected as Mobile devices

Question

We are using wurfl-device-resolver to handle mobile devices that access our application and everything is working as a charm. However Internet Explorer is being detected as a mobile device. We already added the official web browser xml patch that is supposed to solve this but with no results. This is how the device resolver configuration looks like:

<mvc:interceptors>
    <bean id="deviceResolver" class="org.springframework.mobile.device.mvc.DeviceResolverHandlerInterceptor">
        <constructor-arg>
            <device:wurfl-device-resolver root-location="/WEB-INF/wurfl/wurfl.zip" patch-locations="/WEB-INF/wurfl/web_browsers_patch.xml"/>
        </constructor-arg>
    </bean>
</mvc:interceptors>

Any ideas?