diff --git a/bugs/issue-149481dcf4856c1108d2ef4e17feb2b448fa3dbe.yaml b/bugs/issue-149481dcf4856c1108d2ef4e17feb2b448fa3dbe.yaml
new file mode 100644
index 00000000..e1eea6db
--- /dev/null
+++ b/bugs/issue-149481dcf4856c1108d2ef4e17feb2b448fa3dbe.yaml
@@ -0,0 +1,41 @@
+--- !ditz.rubyforge.org,2008-03-06/issue 
+title: free internal enumerator entries as soon as they've been enumerated
+desc: |-
+  Currently the internal enumerator holds the entire enumaration sequence
+  until the internal enumerator is freed.  Because there is no way to
+  enumerate a particular sequence twice, the enumerated entries could be
+  overwritten with e.g. "undefined" values as the enumeration proceeds,
+  generating string free operations steadily instead of as on massive
+  chunk as the enumeration finishes.
+type: :task
+component: duk
+release: v0.9
+reporter: sva <sami.vaarala@iki.fi>
+status: :unstarted
+disposition: 
+creation_time: 2013-12-17 11:18:51.672163 Z
+references: []
+
+id: 149481dcf4856c1108d2ef4e17feb2b448fa3dbe
+log_events: 
+- - 2013-12-17 11:18:51.864087 Z
+  - sva <sami.vaarala@iki.fi>
+  - created
+  - ""
+- - 2013-12-17 11:19:12.792144 Z
+  - sva <sami.vaarala@iki.fi>
+  - commented
+  - Update hobject-design.txt too.
+- - 2013-12-17 12:45:28.370024 Z
+  - sva <sami.vaarala@iki.fi>
+  - commented
+  - |-
+    Actually enumeration goes through the *keys* (not values) of the internal
+    enumerator.  The keys cannot be replaced with "undefined".  They could be
+    replaced with NULL, but this would lead to the risk of the keys being
+    compacted and the "_next" internal property being incorrect.
+    
+    A practical approach would be to replace each key with the empty string as
+    soon as it was enumerated.  This would create duplicate keys in the entry
+    part, however, something that is not normally allowed so it would need
+    careful consideration.
diff --git a/bugs/issue-6e20016d7d9985d8e7bf8481d38be083787e6447.yaml b/bugs/issue-6e20016d7d9985d8e7bf8481d38be083787e6447.yaml
new file mode 100644
index 00000000..b71d6d13
--- /dev/null
+++ b/bugs/issue-6e20016d7d9985d8e7bf8481d38be083787e6447.yaml
@@ -0,0 +1,18 @@
+--- !ditz.rubyforge.org,2008-03-06/issue 
+title: "function instance optimization: prototype object, often not needed but mandatory"
+desc: ""
+type: :task
+component: duk
+release: v0.10
+reporter: sva <sami.vaarala@iki.fi>
+status: :unstarted
+disposition: 
+creation_time: 2013-12-17 13:43:21.717741 Z
+references: []
+
+id: 6e20016d7d9985d8e7bf8481d38be083787e6447
+log_events: 
+- - 2013-12-17 13:43:21.921805 Z
+  - sva <sami.vaarala@iki.fi>
+  - created
+  - ""
diff --git a/bugs/issue-740ed5852b013611875149549da0780d61090132.yaml b/bugs/issue-740ed5852b013611875149549da0780d61090132.yaml
index a374c666..7b34964f 100644
--- a/bugs/issue-740ed5852b013611875149549da0780d61090132.yaml
+++ b/bugs/issue-740ed5852b013611875149549da0780d61090132.yaml
@@ -5,7 +5,7 @@ desc: |-
   reverse, sort?).
 type: :task
 component: duk
-release: 
+release: v0.10
 reporter: sva <sami.vaarala@iki.fi>
 status: :unstarted
 disposition: 
@@ -18,3 +18,7 @@ log_events:
   - sva <sami.vaarala@iki.fi>
   - created
   - ""
+- - 2013-12-17 11:03:46.144583 Z
+  - sva <sami.vaarala@iki.fi>
+  - assigned to release v0.10 from unassigned
+  - ""
diff --git a/bugs/issue-84bc49e3a940f70896f13de4244e2795c2428491.yaml b/bugs/issue-84bc49e3a940f70896f13de4244e2795c2428491.yaml
new file mode 100644
index 00000000..ee752a6f
--- /dev/null
+++ b/bugs/issue-84bc49e3a940f70896f13de4244e2795c2428491.yaml
@@ -0,0 +1,22 @@
+--- !ditz.rubyforge.org,2008-03-06/issue 
+title: performance note on enumeration vs. looping array indices
+desc: ""
+type: :task
+component: duk
+release: v0.8
+reporter: sva <sami.vaarala@iki.fi>
+status: :closed
+disposition: :fixed
+creation_time: 2013-12-17 11:19:44.519810 Z
+references: []
+
+id: 84bc49e3a940f70896f13de4244e2795c2428491
+log_events: 
+- - 2013-12-17 11:19:44.679779 Z
+  - sva <sami.vaarala@iki.fi>
+  - created
+  - ""
+- - 2013-12-17 14:57:39.859993 Z
+  - sva <sami.vaarala@iki.fi>
+  - closed with disposition fixed
+  - ""
diff --git a/bugs/issue-a59f0ee555bf5930ca1ff28a27eccbaf76204471.yaml b/bugs/issue-a59f0ee555bf5930ca1ff28a27eccbaf76204471.yaml
new file mode 100644
index 00000000..5c09ac0e
--- /dev/null
+++ b/bugs/issue-a59f0ee555bf5930ca1ff28a27eccbaf76204471.yaml
@@ -0,0 +1,18 @@
+--- !ditz.rubyforge.org,2008-03-06/issue 
+title: "function instance optimization: caller, arguments properties"
+desc: Make them virtual / autospawned?
+type: :task
+component: duk
+release: v0.10
+reporter: sva <sami.vaarala@iki.fi>
+status: :unstarted
+disposition: 
+creation_time: 2013-12-17 13:43:00.184527 Z
+references: []
+
+id: a59f0ee555bf5930ca1ff28a27eccbaf76204471
+log_events: 
+- - 2013-12-17 13:43:00.396680 Z
+  - sva <sami.vaarala@iki.fi>
+  - created
+  - ""
diff --git a/bugs/issue-d44cbaa5b815598c1b60f699b62b92b622628111.yaml b/bugs/issue-d44cbaa5b815598c1b60f699b62b92b622628111.yaml
index 3329622c..740eafe5 100644
--- a/bugs/issue-d44cbaa5b815598c1b60f699b62b92b622628111.yaml
+++ b/bugs/issue-d44cbaa5b815598c1b60f699b62b92b622628111.yaml
@@ -5,8 +5,8 @@ type: :task
 component: duk
 release: v0.8
 reporter: sva <sami.vaarala@iki.fi>
-status: :unstarted
-disposition: 
+status: :closed
+disposition: :fixed
 creation_time: 2013-12-13 23:48:58.893865 Z
 references: []
 
@@ -16,3 +16,7 @@ log_events:
   - sva <sami.vaarala@iki.fi>
   - created
   - ""
+- - 2013-12-17 16:55:43.172105 Z
+  - sva <sami.vaarala@iki.fi>
+  - closed with disposition fixed
+  - ""