These issues are plaguing many industries and manufacturers at this time. The economy has dampened sales and in response, the best way to save money is to reduce inventory which they all do. The problem with reducing inventory from the store level to the manufacturer is that the product has little to no excess stock which causes these issues.
If you are going to manufacture a product, you must support it at all costs or risk getting a reputation for poor customer service. With the internet at everyone's fingertips including boards like this one, a bad review or complaint can be heard by the masses quickly. Manufacturers need to learn to balance supply and demand better in all economic conditions. With all of the available products being very comparable, customer service becomes key to success. I for one hate to hear that anything is on backorder. Items on backorder are usually the fault of poor planning on different levels from the shop to the supplier to the manufacturer. Complacency costs businesses business.