diff --git a/migrations/20130129_add_missing_preferences.js b/migrations/20130129_add_missing_preferences.js
index 745a365bd0..f4e7b55762 100644
--- a/migrations/20130129_add_missing_preferences.js
+++ b/migrations/20130129_add_missing_preferences.js
@@ -1,5 +1,5 @@
 db.users.update(
-    {'preferences':{$exists:false}},
+    {preferences:{$exists:false}},
     {$set:{preferences:{gender: 'm', armorSet: 'v1'}}},
     {multi:true}
 )
diff --git a/src/app/schema.coffee b/src/app/schema.coffee
index 1efdd0044c..68d08611fb 100644
--- a/src/app/schema.coffee
+++ b/src/app/schema.coffee
@@ -56,4 +56,5 @@ module.exports.updateUser = (user, userObj) ->
     preened = _.filter(union, (val) -> _.contains(taskIds, val))
 
     # There were indeed issues found, set the new list
-    user.set(path, preened) if _.size(preened) != _.size(userObj[path])
\ No newline at end of file
+    # TODO _.difference might still be empty for duplicates in one list?
+    user.set(path, preened) if _.difference(preened, userObj[path]).length != 0
diff --git a/src/server/cron.coffee b/src/server/cron.coffee
index 931ba3e3c7..d0f2ed5b24 100644
--- a/src/server/cron.coffee
+++ b/src/server/cron.coffee
@@ -10,7 +10,7 @@ _ = require('underscore')
 module.exports.deleteStaleAccounts = ->
 
   un_registered = { "auth.local": {$exists: false} , "auth.facebook": {$exists: false} }
-  registered = registered = { $or: [
+  registered = { $or: [
     { 'auth.local': { $exists: true } },
     { 'auth.facebook': { $exists: true} }
   ]};
@@ -34,5 +34,8 @@ module.exports.deleteStaleAccounts = ->
     if !!user.lastCron # for now ignore missing crons, still looking into why this is happening
       lastCron = new Date(user.lastCron)
       diff = Math.abs(moment(today).sod().diff(moment(lastCron).sod(), "days"))
-      if diff > 30
-        removeAccount(collection, user._id)
\ No newline at end of file
+      if diff > 10
+        removeAccount(collection, user._id)
+    else
+      # cron was missing for some reason
+      collection.update {_id: user._id}, {$set:{lastCron: today}}, (err, res) -> throw err if err
\ No newline at end of file