write alphanumeric but see underline characters

[t10]

Hello,

when i write alphanumeric characters in guest command line, I only see underline characters.
For exemple,
if I edit in VIM, I write "This is a example" I see "T____________a____".
When I go to the begin's line with the arrow keys, I see "This is a example " (The cursor is in the first character)
Is the same in command line.

I'm VirtualBox beginner and I don't have idea, but if is a clue:
I have Ubuntu host, I has problem with kernel header because guest is ubuntu server and it don't have generic headers. To be resolved with Setting - General - Advanced - Activating Enable PAE/NX option.
Main Details:
Video Memory: 12 MB
IO APIC: Disabled
VT-x/AMD-V: Enabled
Nested Paging: Disabled
PAE/NX: Enabled ---> I can't disable, if I will run the guest
3D Acceleration: Disabled

sorry for my English, bye, bye

[Perryg]

Does this also work the same way with VI?
Do you have all of the updates for the version of Ubuntu you are using installed?

[Sasquatch]

Best try is with Nano. VIM is based on VI, hence Vi IMproved.
Is your CLI also the correct one, UTF-8?

[t10]

Hello guys,

Does this also work the same way with VI?
Do you have all of the updates for the version of Ubuntu you are using installed?

Yes, also work the same way with VI.
Yes, I have all updates for Hardy

Best try is with Nano. VIM is based on VI, hence Vi IMproved.
Is your CLI also the correct one, UTF-8?

With Nano is the same problem.
OK, I try in HOST2 and it's all correct. I posted info about CLI and kernel.
HOST1
Linux host_1 2.6.24-23-generic #1 SMP Wed Apr 1 21:47:28 UTC 2009 i686 GNU/Linux
t10@host_1:~$ echo $LANG
ca_ES.UTF-8@valencia

HOST2
Linux host_2 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux
t10@host_2:~$ echo $LANG
ca_ES.UTF-8

GUEST
Linux guest 2.6.24-19-server #1 SMP Wed Jun 18 15:18:00 UTC 2008 i686 GNU/Linux
t10@guest:~$ echo $LANG
en_US.UTF-8