diff --git a/TODO b/TODO
index aa536c6a..8c6b4921 100644
--- a/TODO
+++ b/TODO
@@ -1,12 +1,40 @@
-- poor SMP scaling in benchmark
 
-  kernel changes? benchmark an old version
+- gbandjoin in Python seems to be broken
 
-  	7.12 seems to run about the same speed
+    b = VImage.VImage.gbandjoin ([a, a, a])
 
-  avg is different? used to 120.134, now 120.151
+  fails with a typecheck error
 
-  	vips-7.18 had 151 as well
+	$ ./try157.py 
+	Traceback (most recent call last):
+  	File "./try157.py", line 6, in <module>
+    	b = VImage.VImage.gbandjoin ([a, a, a])
+    	TypeError: in method 'VImage_gbandjoin', argument 1 of type 
+		'std::vector< vips::VImage,std::allocator< vips::VImage > >'
+
+  probably all IMAGEVEC wrappers are duff like this ... the proto should take
+  a std::allocator too?
+
+  however, this works?
+
+    b = a.lin ([1,2,3], [4,5,6])
+
+  how odd
+
+- vip2dj -rotate STILL does not always work, eg. try
+  /data/john/study2/small0.v ... should NOT rotate, but it does
+
+- rename "header" program? or maybe use "vips header" instead?
+
+  it's disabled on ubuntu due to a name clash
+
+- import ~/summer-demo/summer.tif fails with "unable to read embedded
+  profile", is this a bug? better err msg would be good
+
+  trying to catch errors now, but is it working? not sure
+
+WONTFIX for 7.20
+================
 
 - load 500 jpegs, group, shrink, save
 
@@ -17,14 +45,29 @@
 
   get about 300 images in on the laptop
 
-  
+- we have tools/ and contrib/ argh, can we fix this
+
+- rename vipsCC in SWIG as pyvips?
 
 - im_flood*() should use inline rather than #define
 
-- we have tools/ and contrib/ argh
+- try the new liboil thing:
 
+	http://www.schleef.org/orc/
 
+  pick something like abs and time it
 
+- IMAGE->file_length should be gint64 rather than size_t?
+
+  if we make this change, need to remove extra casts from various uses
+
+- look into G_GNUC_DEPRECATED for back compat in vips8
+
+- use
+
+	http://library.gnome.org/devel/glib/stable/glib-Byte-Order-Macros.html
+
+  for swapping ... they are asm macros so we should see a speedup
 
 Something like:
 
@@ -45,77 +88,6 @@ Actions:
   use disc for format conversion), and be responsible for deleting the temp
   output file at some point.
 
-
-
-- 1-bit PNG read is broken?
-
-  experimenting with                 
-
-	png_set_shift( read->pPng, 2 );
-
-  in im_png2vips.c
-
-  test image in gmail
-
-- rename vipsCC in SWIG as pyvips?
-
-
-
-
-
-
-
-- try the new liboil thing:
-
-	http://www.schleef.org/orc/
-
-  pick something like abs and time it
-
-- gbandjoin in Python seems to be broken
-
-    a = VImage.VImage.gbandjoin ([a, a, a])
-
-  fails with a typecheck error
-
-  probably all IMAGEVEC wrappers are duff like this ... the proto should take
-  a std::allocator too?
-
-- all the messages like:
-
-	(nip2:31883): GLib-GObject-WARNING **: IA__g_object_set_property:
-	object class `VipsInterpolateBilinear' has no property named
-	`sharpening'
-
-  are v. annoying, can we suppress them? don't set unless the property exists
-  in the vips generic property setter? or do it in nip2?
-
-- vip2dj -rotate STILL does not always work, eg. try
-  /data/john/study2/small0.v ... should NOT rotate, but it does
-
-- IMAGE->file_length should be gint64 rather than size_t?
-
-  if we make this change, need to remove extra casts from various uses
-
-- rename "header" program? or maybe use "vips header" instead?
-
-  it's disabled on ubuntu due to a name clash
-
-- import ~/summer-demo/summer.tif fails with "unable to read embedded
-  profile", is this a bug? better err msg would be good
-
-  trying to catch errors now, but is it working? not sure
-
-- look into G_GNUC_DEPRECATED for back compat in vips8
-
-- use
-
-	http://library.gnome.org/devel/glib/stable/glib-Byte-Order-Macros.html
-
-  for swapping ... they are asm macros so we should see a speedup
-
-WONTFIX for 7.18
-================
-
 - can we use conv_sep to speed up the memuse benchmarks?
 
 - move im_shrink & friends to resample?