Oracle Database Express Edition (XE)

Hi to all the forum users.

My OS : Linux Ubuntu 7.10

I added the following line to /etc/apt/sources.list
deb http://oss.oracle.com/debian unstable main non-free

I then execute the following
wget http://oss.oracle.com/el4/RPM-GPG-KEY-oracle -O- | sudo apt-key add -

Followed by
sudo apt-get update
sudo apt-get install oracle-xe-universal

At the end I run:
sudo /etc/init.d/oracle-xe configure

This is my oracle user configuration:
uid=1002(oracle) gid=1001(dba)
groups=4(adm),24(cdrom),29(audio),46(plugdev),110(admin),1001(dba)

As oracle user I started the listener:
oracle@~$ lsnrctl start

LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 10-NOV-2007 18:56:53

Copyright (c) 1991, 2005, Oracle. All rights reserved.

Starting /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/network/admin/listener.ora
Log messages written to /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC_FOR_XE)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 10-NOV-2007 18:56:53
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/network/admin/listener.ora
Listener Log File /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC_FOR_XE)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

Then I tried to start the DB manually:
oracle@~$ sqlplus /nolog

SQL> connect / as sysdba
Connected to an idle instance.

When I try to start the DataBase I face this error:
SQL> startup
ORA-00600: internal error code, arguments: [keltnfy-ldmInit], [46], [1], [], [], [], [], []

Did someone face the same problem?

Thank you for your time.