Igor,
Could you post your exact recipe and technique, along with any gravity, P/h, and temperature readings you might have taken? It's tough to say what could be wrong, if anything, without knowing what you've done. Post it to Toubleshooting Your Mead, so that others know to look for it there. There are some very sharp people on this board, who will no doubt have insight into your situation (I don't claim to be among their number, but if you can't stand on the shoulders of giants, then you can at least hitch a ride on their coattails).
-David