I don't see that a "max size used by the cache" option was added.  I'm running 1.0.0.442 and have I/O Throttled errors because (supposedly) my drive D: is out of space.  The error says:   "I/O Throttled Cloud drive (I:\) - Dropbox is having trouble writing data to the local disk (D:\).   This error has occurred 53,567 time.   Your local disk (D:\) has run out of disk space.   Continuing to get this error can affect the data integrity of your cloud drive."   Drive D: is the second part