diff --git a/todo.txt b/todo.txt
index a3d1cd2b77..a8012350e4 100755
--- a/todo.txt
+++ b/todo.txt
@@ -49,8 +49,6 @@ Bugs
 
 - bug: stress testing basic method example (eval example) 
   without ``-d:release`` leaks memory?
-- bug: temp2.nim triggers weird compiler and except.nim bug
-- bug: negative array indexes fail to index check
 - bug: object {.pure, final.} does not work again!
 - bug: tsortdev does not run with native GC?
 
@@ -70,6 +68,7 @@ version 0.9.XX
 - tlastmod returns wrong results on BSD (Linux, MacOS X: works)
 - nested tuple unpacking; tuple unpacking in non-var-context
 - 'nimrod def': does not always work?
+- implement/generalize the effect system
 - test branch coverage
 - checked exceptions
 - make pegs support a compile-time option and make c2nim use regexes instead