Help tracking down error in postgres log

I get the following error in the postgres log. I know what the error
means and how to fix it, but I don't know how to determine which
statement is causing it:

2007-03-27 09:29:04 WARNING: nonstandard use of \\ in a string literal
at character 72
2007-03-27 09:29:04 HINT: Use the escape string syntax for backslashes,
e.g., E'\\'.

Can I get postgres to log the actualy command or stored procthat caused
the problem?