#1124 c2s sessions are referenced in two not entirely overlapping tables
The shared /*/c2s/sessions table contains all connected sessions, including unauthed ones.
The prosody.full_sessions table has all resource-bound session, including (if mod_smacks is used) hibernating ones.
Having two separate sets of sessions makes it difficult when you idealy want to have the union of both, eg in mod_admin_telnet, the c2s:show() command currently uses the shared table, resulting in hibernating sessions not being shown.
Also, BOSH sessions are in yet another shared table or two.