The following patch was posted this evening by Tom Lane that could fix your
problem.  It fixed a similar problem I was having with ODBC.

If you don't have CVS access and don't want to wait for tonight's snapshot,
here is the patch:
*** src/backend/tcop/dest.c~	Wed Apr 28 18:15:07 1999
--- src/backend/tcop/dest.c	Wed Apr 28 18:15:45 1999
***************
*** 336,342 ****
*	tell the fe that we saw an empty query string
	  			 * ----------------
	  			 */
	! 			pq_putbytes("I", 1);
	  			break;
	  
	  		case Local:
	--- 336,342 ----
*	tell the fe that we saw an empty query string
  			 * ----------------
  			 */
! 			pq_putbytes("I", 2); /* note we send I and \0 */
  			break;
  
  		case Local:


	-----Original Message-----
	From:	Peter T Mount [SMTP:peter@retep.org.uk]
	Sent:	Wednesday, April 28, 1999 11:50 PM
	To:	PostgreSQL Hackers List
	Subject:	[HACKERS] FYI: snapshot 4/28/1999 (fwd)


	I just received this. Any ideas ?

	-- 
	       Peter T Mount peter@retep.org.uk
	      Main Homepage: http://www.retep.org.uk
	PostgreSQL JDBC Faq: http://www.retep.org.uk/postgres
	 Java PDF Generator: http://www.retep.org.uk/pdf

	---------- Forwarded message ----------
	Date: Wed, 28 Apr 1999 16:36:56 -0500
	From: Brian P Millett <bpm@ec-group.com>
	To: Peter T Mount <peter@retep.org.uk>
	Subject: FYI: snapshot 4/28/1999

	Peter, thought that you would like to know that the snapshot for
today
	will not allow a jdbc connection.  I don't know if this is a jdk
	security thing, or not.  The snapshot from Monday, allows
connections.

	I'm using jdk1.2.1, solaris 2.7, WorkShop Compilers 5.0 98/12/15 C
5.0

	--
	Brian Millett
	Enterprise Consulting Group     "Heaven can not exist,
	(314) 205-9030                     If the family is not eternal"
	bpm@ec-group.com                   F. Ballard Washburn

	

Thu, 29 Apr 1999 01:03:53 -0500
Michael J Davis <michael.j.davis@tvguide.com>
RE: [HACKERS] FYI: snapshot 4/28/1999 (fwd)