upgrading from 7.1.2 to 7.3.2

Greetings,

I've just upgraded from PostgreSQL 7.1.2 to 7.3.2.  Things seem to
work OK so far (only been about 70 min or so since upgrade).

One thing I did see break is how I've been using timestamp():
 e.g.,
 in 7.1.2 => select timestamp ( 1046923200 );     timestamp         ------------------------  2003-03-05 20:00:00-08 (1
row)
 in 7.3.2 => select timestamp ( 1046923200 ); ERROR:  TIMESTAMP(1046923200) precision must be between 0 and 6


Can anyone point me to a work-around?

Thanks in advance,

sidster
--
They who would sacrifice freedom for security will have neither.  -Ben Franklin