About Deleting Large Objects

Hello everyone,

I'm new to the list, but couldn't find any information on the following
question, neither in the manuals nor in the FAQ. Could someone help me out
here?

How do I effectively delete Large Objects from the database? DELETE just
removes the oid from the table. I want the object itself to be deleted as
well. Even a call to vacuum did not help. I'm using Postgres 6.3 on
Linux 2.0.18.

Philip