Hi Mojun - and Aware support,
Out of curiosity I tried this and got the same results as you not only on Linux but also on Mac, although firefox on windows worked.
The problem seems to lie with the underlying technology in firefox itself because, when we tried Safari masquerading as firefox it worked fine.
Sorry I don't have time to delve deeper but what I can tell you is that in the case of both the Linux version and the Mac version of firefox, the LoginNotification processes triggered (Aware Logs) before the page froze
Anybody else had any problems?