Created attachment 185572 [details]
Debug file with possible show why happening this bug

Dear Developers,

In Orca-list I reported yesterday this issue, and Don Marag confirmed the following interesting issue:
if I both Enable alphanumeric and punctuation keys and echo by character setting, I see an interesting issue for Thunderbird message composing area.
This case when I composing a new message or reply a message, Orca spokening duplicated the typed alphanumeric letters. This problem is not presenting with Gedit text box, Thunderbird address and subject field text box, only message body text area.
Reproducation steps:
1. Goto Orca preferences dialog, navigate the keyecho page, and enable both alphanumeric and punctuation keys and echo by character checkboxes.
2. Click Ok button.
3. Launch Thunderbird.
4. Press Ctrl+n key combination, give the address, subject fields, and begin type with message body area.
You will be hear double time spokening for example the a, b, c, d etc leters, this is true of course not only english alpha numeric characters, true both english letters and accented characters (for example é letter).
Other key echo settings is disabled my system when I doed this test, except enable locking keys check box.
I using now Ubuntu Lucid, and orca -3.1.0pre version (master branch).

Of course, I maked a debug.out file, with I attaching.
I found this traceback error message with debug.out file with lot of places, possible help:
Traceback (most recent call last):

+ Trace 226659

If possible fix this problem, please commit the future fix both actual master branch and 3.0 stable version.

Attila