diff -ur DBIx-Class-0.08124/lib/DBIx/Class/ResultSet.pm DBIx-Class-0.08124.with_less_dies/lib/DBIx/Class/ResultSet.pm
--- DBIx-Class-0.08124/lib/DBIx/Class/ResultSet.pm	2010-10-27 23:15:17.000000000 +0000
+++ DBIx-Class-0.08124.with_less_dies/lib/DBIx/Class/ResultSet.pm	2010-12-09 11:17:39.000000000 +0000
@@ -552,9 +552,7 @@
         join "\x00", sort $rsrc->unique_constraint_columns($c_name)
       }++;
 
-      push @unique_queries, try {
-        $self->_build_unique_cond ($c_name, $call_cond)
-      } || ();
+      push @unique_queries, ( $self->_build_unique_cond ($c_name, $call_cond, 1) || () );
     }
 
     $final_cond = @unique_queries
@@ -612,7 +610,7 @@
 }
 
 sub _build_unique_cond {
-  my ($self, $constraint_name, $extra_cond) = @_;
+  my ($self, $constraint_name, $extra_cond, $hide_throw) = @_;
 
   my @c_cols = $self->result_source->unique_constraint_columns($constraint_name);
 
@@ -627,6 +625,7 @@
   $final_cond = { map { $_ => $final_cond->{$_} } @c_cols };
 
   if (my @missing = grep { ! defined $final_cond->{$_} } (@c_cols) ) {
+    return undef if $hide_throw;
     $self->throw_exception( sprintf ( "Unable to satisfy requested constraint '%s', no values for column(s): %s",
       $constraint_name,
       join (', ', map { "'$_'" } @missing),
diff -ur DBIx-Class-0.08124/t/60core.t DBIx-Class-0.08124.with_less_dies/t/60core.t
--- DBIx-Class-0.08124/t/60core.t	2010-12-09 11:23:55.000000000 +0000
+++ DBIx-Class-0.08124.with_less_dies/t/60core.t	2010-12-09 11:26:14.000000000 +0000
@@ -8,6 +8,12 @@
 use DBICTest;
 use DBIC::SqlMakerTest;
 
+my $die_calls = 0;
+$SIG{__DIE__} = sub { 
+  #warn("Died: @_");
+  $die_calls++;
+};
+
 my $schema = DBICTest->init_schema();
 
 eval { require DateTime::Format::SQLite };
@@ -147,7 +153,9 @@
   is($new_obj->in_storage, 0, 'new artist is not in storage');
 }
 
+$die_calls = 0;
 my $cd = $schema->resultset("CD")->find(1);
+is( $die_calls, 0, "No exceptions passed to SIG{__DIE__} due to looking for unique keys" );
 my %cols = $cd->get_columns;
 
 is(keys %cols, 6, 'get_columns number of columns ok');