The keybord cannot be used for fast access to an item of a pop-up menu

Can you explicitly point out where you find this impacts usability in gnome? Which menues in which applications?

The best example is for choose the keyboard layout.
There is a pop-up menu with like 40 different countries.
I can't access to france just by tape "france", and I can't neither go the countries with a name in "F..." by pressing "F".
There is the same issue for choose the language of the system.

I think gtk should support the keyboard access in pop-up menus, at least in these which are sorted alphabetically.

Confirmed. This sounds like a valid usability issue, and a good example scenario. Thank you for reporting this!

http://bugzilla.gnome.org/show_bug.cgi?id=310931

Thank you for taking the time to report this bug and helping to make Ubuntu better.
Is this bug reproducible with the latest Lucid packages ?
Tanks in advance.

Thank you for your suggestion. However, the changes you are requesting aren't really a bug and require more discussion, which should be done on an appropriate mailing list or forum. http://www.ubuntu.com/support/community/mailinglists might be a good start for determining which mailing list to use.

This bug report is being closed due to last comment. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.

I'm reopening this bug on Ubuntu with GTK+ as the affected package. It does indeed require discussion, and having a bug report as the catalyst can be very helpful.