Sony Ericsson Xperia Pro and Xperia Mini Pro users, you have patiently endured with hardware keyboards that could not enter numbers or non-English characters. Good news! I just fixed these bugs (bug 772252 and bug 766317) in Aurora 17. I will uplift these fixes for next week’s refresh of Firefox Beta 16 in the Google Play store.
The problem was that Firefox didn’t remember to “lock” the ALT shift state after the ALT key was released. The workaround was to enter numbers and non-English characters using the virtual keyboard or to hold down ALT while pressing the other key.