--- a/SI/ptable.pm	Fri Jan 15 01:16:12 2010 +0100
+++ b/SI/ptable.pm	Fri Jan 15 20:38:38 2010 +0100
@@ -23,11 +23,13 @@
 	my ($current, %dev);
 	foreach (`sfdisk -d 2>/dev/null`) {
 		chomp;
+		### $_
 		if (/^# partition table .*?(\/\S+)/) {
 			$current = (stat $1)[6] >> 8 == $devmapper ? undef : $1
 				and push(@{$dev{$current}}, $_);
 			next;
 		}
+		next if not $current;
 		push @{$dev{$current}}, $_;
 	}
 	### partiton tables of useful blockdevices: