The Forefront Identity Manager team has released a new rollup hotfix package (build 4.0.3573.2). The Knowledge Base article (http://support.microsoft.com/kb/2417774) describes the changes.
Long awaited is the fix for the casing problem, which is included and most interesting is the asynchronous export option for the FIM MA to enable performance boost.
Looking forward to testing this rollup hotfix.
Also remember to check up these hotfixes, if you haven't done so already -