BUG #5338: PG_DUMP fails due to invalid adnum value

The following bug has been logged online:

Bug reference:      5338
Logged by:          Toni Helenius
Email address:      toni.helenius@syncrontech.com
PostgreSQL version: 8.3.9
Operating system:   Windows 2008 Server Enterprise
Description:        PG_DUMP fails due to invalid adnum value
Details:

I tried to google this but I didn't get much info. What is this all about??

I get the following error while trying to take a dump:
pg_dump: finding the columns and types of table "bsc_day1_001"
pg_dump: finding default expressions of table "bsc_day1_001"
pg_dump: invalid adnum value 25493128 for table "bsc_day1_001"
pg_dump: *** aborted because of error

Using following command:
pg_dump.exe -h localhost -p 5432 -U postgres -F c -v -f "series.backup" -n
\"SERIES\" db