"XmlRpcFault: Already logged in as XXX" error in Java Applet accessing services from drupal website

i have an applet using redstone.xmlrpc on the same domain as my drupal site, so i assume this is about sessions and cookies.

the problem is that i am using a separate user for services and if i'm logged in as myself i get this error. actually, there are other circumstances (not exactly sure which) where if the services user is logged in, then i get the same error.

the applet logs out the user, so ideally it shouldn't ever be logged in longer than it takes to get data.

is there any way that the conflict between the users can be mitigated?

can i have the applet get the session key and send that for auth instead of a separate user? (i'm not sure how i would do that ... )

any suggestions would be appreciated.