There can be several reasons why it takes a long time to restore your backup file in QuickBooks Desktop, Kat1090. Here are a few possible factors. 

1. File Size: The larger the file, the longer it will take to restore. Since you mentioned that your backup file goes back to 2009, it's likely quite extensive, which can contribute to the longer restoration time.
2. Hardware Specifications: The speed of your computer's processor, the amount of RAM, and the type of hard drive can impact the restoration speed. The restoration process may be slower if your hardware needs to be updated or optimized for QuickBooks.
3. Network Speed: If you are restoring the backup file from a network location or a remote server, the speed of your network connection can affect the restoration time. Slow or unstable network connections can significantly extend the process.
4. Other System Processes: If your computer runs other resource-intensive tasks or applications simultaneously, it can slow down the restoration process. It's advisable to close unnecessary programs and processes during the restoration.
5. Data Integrity Issues: The restoration process may take longer if the backup file is corrupted or has data integrity issues. QuickBooks will attempt to fix those problems during the restoration.
    

However, if you've already waited for an extended period and the restoration process is still ongoing, I recommend contacting QuickBooks support for further assistance. They can guide you through the restoration process of your data. 

I'd suggest checking out this website: QuickBooks Data Services FAQ. This article contains a FAQ about the data process.

In case you see any errors when restoring your backup, visit this article: Get help with Error: Failed or Error: Restore Failed.

If you have other concerns about retrieving your backup, please don't hesitate to leave a message in the comment section. I'm always around here in the Community to help.