backslashes in 8.3.3

I just upgraded to 8.3.3 from 8.1.5 and noticed that backslashes are
handled completely differently now. For example,

db=# insert into junk (cifs) values ('\\foooo\bar');
WARNING: nonstandard use of \\ in a string literal
LINE 1: insert into junk (cifs) values ('\\foooo\bar');
^
HINT: Use the escape string syntax for backslashes, e.g., E'\\'.
INSERT 0 1
db=# select * from junk;
cifs
--------------
\foooo\x08ar
(1 row)

Is there anyway to disable this behavior or fix this on the server
side? I really don't want to have to rework all of our code that
inserts or queries data.

It seems this works,

db=# insert into junk (cifs) values (E'\\\\foobar\\bar');
INSERT 0 1

--
Brandon