For the ObjectHandles fans out there, I've just submitted changes that let ObjectHandles 2 play nicely with FlashBuilder4 / Flex 4 SDK. While doing that I fixed a couple bugs, and set up a build environment so I can easily publish OH2 releases onto the google code page. So now you can download OH2 from the downloads section of the google code page. (Previously, you could only get it from subversion) That package contains source, documentation, and precompiled swcs for both Flex 3 and Flex 4. http://code.google.com/p/flex-object-handles/downloads/list
I hope to write some better documentation on how to use this new release soon. If you've been using ObjectHandles Version 1, it's not a straightforward port to the new stuff. There are drastic changes to how it all works.