Last week I noticed all my folders I had listed under Archive suddenly dissappeared, I've tried a number of ways to retrieve them, by searching on google for solutions but no luck so far. These folders were important to me, but seem nowhere to be found. I haven't noticed anything different appart from a few emails seemed to disappear or then reappear after I had deleted them from my inbox.

Is there any way of retrieving these folders? Is it a bug in the system or something I can do to get these back? WORRIED!!!