1) I use Ares 2.1.4 and I realized that some files are not put into sharing.
For example, files with names beginning with numbers 0001 ...
00258 .... etc, are not seen, and Ares does not create the hash and not be shared.
2) Other files with normal names are usually recognized but not shared. I don't know why.
Even I put the check mark on "sharing"(in the second case), the subsequent reopening of Ares will again not shared.
Windows7 and Windows Vista machines.