PQexec(conn,buf)..... buf<255 chars?

Hi,

I'm writing a cgi, and use PQexec to submit a "simple" syncron. query.

The query is constructed by the program and varies in length.
The lenght is sometimes more than 255 chars and PQtrace only reports
.....parse error at ""
(if I cut and paste the query into psql it works fine)

Is it possible that there is a limit? is there a way to reconfigure, fix or
go arround it?
I'm using RedHat 6.1 & PostgreSQL 6.5.2

any suggestions welcome.
Axel mailto:goddyna(at)ansonic(dot)com(dot)au