Can't upload 350 MB file to SharePoint 2010 site


I need to upload a 350 MB file to SharePoint 2010 site. Things that I have done, but failed:

1. Increase the FileSizeLimitInBytes value in the registry on the Windows 7 client
2. On the SharePoint server in Central Admin, I have set 2,047 MB in the max upload size for the web application
3. In the web.config for IIS7 located at c:\inetpub\wwwroot\wss\virtualdirectories\site, I changed this:
<requestLimits maxAllowedContentLength="2146435072"/>
4. Did an IISReset

Are there other settings that I am missing?

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PBITAuthor Commented:
I made all of those changes on the server and SharePoint, but the file upload still fails. I have been trying the Explorer View to drag and drop files into the document library. However, SharePoint just hangs. The green status bar says About 5 seconds remain in the copying dialog box, but it never completes. Where can I look for error messages?
Uls log viewer (google it if you haven't got the viewer already)
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Rainer JeschorCommented:
Any AntiVirus software for SharePoint running on your servers?
PBITAuthor Commented:
After waiting about an hour, an error message appears.

"An unexpected error is keeping you from copying the file. If you continue to recieve this error, you can use the error code to search for help with this problem.

Error:  0x800070079: The semaphore timeout period has expired."

There is antivirus on the server.

Would this error be the SharePoint log files?
PBITAuthor Commented:
For now, we have decided to limit the size of documents being uploaded into SharePont.
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