diff --git a/doc/bugs/sessions.db_grows_big.mdwn b/doc/bugs/sessions.db_grows_big.mdwn
new file mode 100644
index 000000000..6c06be4b2
--- /dev/null
+++ b/doc/bugs/sessions.db_grows_big.mdwn
@@ -0,0 +1,7 @@
+The `$srcdir/.ikiwiki/sessions.db` file gets big. Does anything clean it?
+
+    -rw-------  1 jon jon  81M Mar 10 15:41 sessions.db
+
+That's 155,990 records, with the earliest having an atime of
+Sat, 29 Nov 2008 17:33:43 GMT… — [[Jon]]
+