About ERROR: could not convert UTF-8 character 0x00e9 to ISO8859-1

Greetings,

PostgreSQL 8.0.1 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.3.2.
When I run

select * from table1;

I got an error:
=========
ERROR: could not convert UTF-8 character 0x00e9 to ISO8859-1

I tried to google but cannot find much info about it. Can somebody help?

Thanks,
Emi