Product disappears!!

Hello,

My question is this: On my site all of my products say this on their product description pages: 1 Units in Stock.

Even when I have more then one unit. When a customer buys a product that product then disappears from my site it will eventually comeback but Im not sure how to fix this as it's not good when the product disappears even though I have more. Is there a setting or something Im missing to fix this problem.

Thank you for your help and time!!

Sounds a bit weird.
The normal configuration settings can be found on the admin panel in:
Configuration - Stock. Here you should have it set to check stock level(TRUE) and subtract stock (TRUE)
And on Catalog- Product Types - (Pick whatever type you're using) - EDIT LAYOUT - Show Quantity in Stock should be set to 1 (true).

When you add a product if you correctly set the quantity available, and you don't limit the customer to only buying one, then it should count-down.
Have you added some sort of stock-by-attribute module that might be messing it up?