I have two languages active and all the previously translated products are visible as they should.
The problem is that I cannot translate products after updating to 22c, Normally the small flags appear next to the lines that need to be translated but they have vanished after update.
http://forum.virtuemart.net/index.php?topic=118455.0
^--- A way to fix the flags problem.
After you fix it, can you check on whether you can create a product with both languages?
On mine with 2.0.22c all languages (GR-En) are overiden so I can only have one language! :/