--- xscreensaver-5.12/hacks/vidwhacker.debug	2007-07-11 03:27:56.000000000 +0900
+++ xscreensaver-5.12/hacks/vidwhacker	2011-01-21 07:06:13.000000000 +0900
@@ -378,7 +378,7 @@
   } else {
     my $tmpdir = $ENV{TMPDIR};
     $tmpdir = "/tmp" unless $tmpdir;
-    my $fn =  sprintf ("%s/vidwhacker-%08x", $tmpdir, rand(0xFFFFFFFF));
+    my $fn =  sprintf ("%s/vidwhacker-%08x.ppm", $tmpdir, rand(0xFFFFFFFF));
     local *OUT;
     unlink $fn;
     push @all_tmpfiles, $fn;
--- xscreensaver-5.12/hacks/webcollage.debug	2009-10-14 06:19:36.000000000 +0900
+++ xscreensaver-5.12/hacks/webcollage	2011-01-21 07:08:39.000000000 +0900
@@ -2709,7 +2709,7 @@
 #
 ##############################################################################
 
-my $image_ppm   = sprintf ("%s/webcollage-%08x",
+my $image_ppm   = sprintf ("%s/webcollage-%08x.ppm",
                            ($ENV{TMPDIR} ? $ENV{TMPDIR} : "/tmp"),
                            rand(0xFFFFFFFF));
 my $image_tmp1  = sprintf ("%s/webcollage-1-%08x",