We have collected together all of the hotfixes and patches we have made to LCDS 3.1 and released this as LiveCycle Data Services 3.1.1.
You can find this release here.
This release fixes 51 issues on both the client and server. See the readme.txt file in the zip for details on what those fixes are and how to 'install' the update - basically by replacing swc files in your Flex SDK, and jar files to the WEB-INF/lib of your web applications.
Lots of goodness in here. The usual caution applies - test your applications before updating production systems.