Sorted:

ZXing integrated in Android App (incl. PhoneGap)-Collection of common programming errors

UILabel with rounded corner (Xcode 4.5 and iOS 6)-Collection of common programming errors

Can't use $match with mongoose and the aggregation framework-Collection of common programming errors

Client side validation in MVC 4 with jQuery 1.10.2-Collection of common programming errors

Xml serialization, how to exclude objects at runtime-Collection of common programming errors

enabling UTF-8 encoding for clojure source files-Collection of common programming errors

OutOfMemory Exception when loading lots of Images from Isolated storage-Collection of common programming errors

Android application trying to implement login via Google plus shows strange system error-Collection of common programming errors

JSON encode PHP AJAX jquery response error-Collection of common programming errors

Sortable table columns in django-Collection of common programming errors