Dead keys on Ubuntu

Hello, all--

I've been trying unsuccessfully for some hours to make my Squeak image
accept diacritical characters under Ubuntu 7.04. I've tried all
possible combinations of the -textenc, -encoding, and LC_CTYPE options
I could but none worked. The diacritical characters either don't
display or display incorrectly.

Ironically, if I run Squeak via Wine, the diacritical characters
display correctly.

Any help pointing me to the right direction would be appreciated.

My system configuration today is:

Distro: Ubuntu 7.04

Squeak:

3.9-8 #5 Tue Oct 10 11:56:09 PDT 2006 gcc 4.0.3
Squeak3.9alpha of 4 July 2005 [latest update: #7021]
Linux ubuntu 2.6.15-27-386 #1 PREEMPT Sat Sep 16 01:51:59 UTC 2006
i686 GNU/Linux
default plugin location: /usr/local/lib/squeak/3.9-8/*.so

Image:

Tried with the vanilla 7067 image, the lasted squeak-dev image, and
even Ramon Leon's image. :-)

Any help is appreaciated.

Thanks,

Fahr