losing posts while editing

hey,

very ennerving and strange problem: during editing posts in the admin panel I am now regularly losing posts. it happens only during the edit, though the edit doesn´t have to be reated to the lost posts.
the strange pattern is that looking in the sql-db only the table entries of the actual posts are missing while categories, attachments and other stufff is still there. sometimes it loses single posts sometimes all of them…
while I am using Gengo and WordPress as plugins (newest version), I can´t really imagine they are emptying (these) parts of the SQL-table… on the other hand i can´t really think of anything to explain this either… but it´s awkward..
– any ideas/hints? thanx.