I installed ecmtagent_cpp_bt.sis on my E61 and afterwards had problems with the OSS browser. If I go to a web page that requires a login, enter my username and password and click on the login button I either get a message "Web: Operation failed" or nothing appears to happen.

I have installed and uninstalled ecmtagent_cpp_bt.sis twice (on the memory card) and I have tested the browser with more than one web page so I am positive that I have established a pattern.