Hi Yasser,
I experience this same issue with Workflow Server 6.1. I also have a *REALLY* annoying problem where I can't store my password in the ODBC Connection for Workflow Server, otherwise it won't allow me to save a process to the server. So the alternative is I have to enter my password every time I open or save a process. And, to make matters worse, I actually have to enter the password twice every time! Very frustrating!