Since you asked, I researched how to flush the BITS queue using Windows PowerShell. When you list your jobs, you should show 8, 5 of which are the problem and 3 that cannot download because of the first 5.
The commands given will completely flush the queue and hopefully allow for the other jobs to be restarted and completed. I was thinking, if you are considering restoring your system back to its basic install, it won't hurt to try something that might keep you from having to do that.
Go to the Start Menu, All Programs, Accessories, Windows PowerShell and run as admin.
With Window open, type the following commands. You can see the result in the attachment, except for the jobs descriptions. Note, I looked for jobs after doing this and showed none.