Just when we were about to abandon ship on the 4.3 release and roll back to 4.0.3, a new "point release" is issued...

"A "point" release has been posted for DotNetNuke 3.3/4.3 today. This point release contains fixes for a number of issues which were identified in the original Release Candidate packages." - Download from DNN

With weird caching issues and missing UserController methods,...which I will rant about later...we were prepared to roll back our development stack to the 4.0.3 release. Instead we will be testing the new version with our fingers crossed that it fixes many of the issues we have found. Check back later for the results!