I had this problem and it won't go away even after changing the method name in componant interface as suggested by Kathy.
The solution is to change the security settings while creating new Enterprise bean as listed in below link. After this setting client will work even if component interface has method called getAdvice() !! I have tried it. http://sunsolve.sun.com/search/document.do?assetkey=1-30-00665-1