Comment 4 for bug 498110

I have the same thing happening to me.

Huawei USB modem connecting to Three mobile broadband Australia.

If anyone wants any logs or reports, just tell me which ones.

I also have a workaround (a bit whacky but it works):
0) don't connect yet
1) open FireFox,
2) browse to a page (any page will do), so that the "try again" button appears,
3) now click on your connection, and (as the modem is handshaking) start repeatedly pressing the "try again" button in FireFox (click quickly, several times a second)
4) the connection works (works every time for me)

Weird, hope this helps with fixing the problem ... what does clicking "try again" doing that helps?

-- Steve.