It has not been long since 2.0.1 but 2.0.2 introduces an important change (not really a fix) in the MutexModel.
MutexModel in ReadWriteMultiThreading mode now allows multiple read operations from the same thread at the same time even if a write operation is waiting. This fixes a deadlock in the Nepomuk Strigi backend from KDE.
Source package from now on available.