Here, someone requested parallel hashing for multiple drives.
I also think this would be a great feature! It would certainly be a major reason to use ApexDC at LANs, where newbies have never used DC before and therefore haven't hashed any files, or people just haven't run their DC client to hash since the last LAN. This situation comes up at basically every LAN and some of the time these people haven't even finished hashing all their files by the end of the LAN.
Obviously, this isn't such a problem if you use ApexDC all the time, but everyone I know here (in New Zealand, the land of small data caps) uses it exclusively for LANs.