SimplyMEPIS 6.0 is based on the Ubuntu package management system and repositories, and is currently amongst the top 5 Linux distributions (according to distrowatch.com). In 6.0, SimplyMEPIS only supports the 32-bit architecture, but the new release, 6.5, supports the 64-bit architecture.
Note that IBM does not officially support this distribution for DB2 9. Any problems you encounter using this distribution must be replicated on a supported distribution before IBM Support can help you resolve the issue.
These installation notes are based on a single-partition 32-bit installation using the 2.6.15-26.386 kernel.
After installation, I could not create the SAMPLE database, or any database for that matter. DB2 returned this strange error:
SQL0440N No authorized routine named RTRIM of type "FUNCTION" having compatible arguments was found
su - db2inst1 db2sampl
If you want to enable external connectivity to your DB2 server, you must open up ports 523 and any DB2 instance services (use db2 get dbm cfg | grep SVCENAME to retrieve the service names and check /etc/services for the equivalent port values) in your firewall.