diff --git a/migrations/20130128_add_missing_crons.js b/migrations/20130128_add_missing_crons.js
new file mode 100644
index 0000000000..1a4c919cc2
--- /dev/null
+++ b/migrations/20130128_add_missing_crons.js
@@ -0,0 +1,5 @@
+db.users.update(
+    { lastCron: { $exists: false} },
+    { $set: { lastCron: +new Date } },
+    { multi: true }
+);
\ No newline at end of file
diff --git a/src/server/cron.coffee b/src/server/cron.coffee
index 5ea286c2c4..931ba3e3c7 100644
--- a/src/server/cron.coffee
+++ b/src/server/cron.coffee
@@ -31,11 +31,8 @@ module.exports.deleteStaleAccounts = ->
   collection.findEach un_registered, (err, user) ->
     throw err if err
     return unless user? #why does this happen sometimes?
-    unless user.lastCron
-      removeAccount(collection, user._id)
-      return
-
-    lastCron = new Date(user.lastCron)
-    diff = Math.abs(moment(today).sod().diff(moment(lastCron).sod(), "days"))
-    if diff > 30
-      removeAccount(collection, user._id)
\ No newline at end of file
+    if !!user.lastCron # for now ignore missing crons, still looking into why this is happening
+      lastCron = new Date(user.lastCron)
+      diff = Math.abs(moment(today).sod().diff(moment(lastCron).sod(), "days"))
+      if diff > 30
+        removeAccount(collection, user._id)
\ No newline at end of file