Today I had to upload a big file (over 15 MB) and I had some problems with uploading. I tried different applications. Accidentally, I had Windows Task Manager opened while uploading and noticed interesting patterns.

This is how downloading file with Internet Explorer looks like.

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Upload to ASP.NET page with with Internet Explorer.

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Upload to SharePoint page with with Internet Explorer.

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Upload to ASP.NET page with with Firefox.

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Sending e-mail with Outlook Express.

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Uploading file with FileZilla.

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