Retracing my steps... one thing I did change is switch from Qt4.5 to Qt4.6, which should have a newer (bigger, better) version of WebKit... However, that one will be harder to test as PR1.2 has no 4.5 version. I wonder if any flash experts could make a test flash file that would easily test a checklist of things (specific version, bugs, etc) ? I'm already using guimark2 to test fps/performance, but that does not adress potential IO issues...