I ordered an Inspiron 1500 on 7/9, with delivery date of 7/18-7/21. On Monday, 7/17, I contacted customer support because I could see it hadn't been shipped, although it had been marked as "Configuration Complete" for several days, so I just wanted to check on it. I was told that the laptop is waiting in the factory for a part. Yesterday, I asked for a firm completion date, and was told it could not be provided - no one knows. I fail to see how the configuration is complete, when it is missing parts.
So, today, still no update, so I decided to cancel the order. Now, I can't even do THAT because it is marked as configuration complete. Customer service recommendation - just let it come, and then contact them to return. I've had experience with that approach before - you get hit with a restocking fee, and you have to pay for shipping to return, especially given Dell's transfer of title policy.
So bottom line is, cancel the order, and I should not have any charges for Dell's inability to deliver.