Norton Insight Submission Runs When I'm Disconnected from the Internet

Why does the background Norton Insight task run daily for 3 or 4 minutes when my computer is in idle mode, even if my computer is disconnected from the Internet?

 

I found an excellent post about the Norton Insight submission here, which confirms my suspicion that this task cannot be disabled by turning off the Insight Network scans (Settings | Computer Settings | Insight Protection).  If this task is gathering the name/version/SHA256 hash tag of files on my computer and trying to send them to a Symantec server, it doesn't make sense that this task would still run and use up a huge chunk of my CPU if it can't complete the submission.
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MS Windows Vista Home Premium 32-bit SP2
NIS 2011 v. 18.1.0.37
HP Pavilion dv6835ca, Intel Core2Duo CPU T5550 @ 1.83 GHz, 3.0 GB RAM, NVIDIA GeForce 8400 GS