It doesn't look like it is locked, so it is carrying the delete out.
However that doesn't mean, that there isn't any other locking
occurring, or simply your disks are rather busy.
Also, maybe the DB is rather big, what are the table sizes ?
If you are using 8.4+, than do \dt+ to get an idea, otherwise SELECT
pg_size_pretty(pg_total_relation_size('table_name')); for each table.