Cata gear issue

Hello there,

so here is my character: http://armory.warmane.com/character/...harion/summary

and my problem here is that sometimes i keep losing my cataclysmisc gear (for retribution) when i log off

and when i log on ,i check my bank,inventory buyback merchant still,i can't find my gear! and it really bothers me because this is not the first time it happens that i lose randomly my gear when i log on,im pretty sure no one has access on my account at all.

please help,i'm sick of farming to get back my conquest gear and rebuying the enchants and gems....