Google-chrome – Why do Google Chrome downloads stay at 100% for a long time

TechCrunch: Silverlight 4 In Beta. Supports Google Chrome.

Microsoft announced the availability of Silverlight 4 in beta at its Professional Developers Conference (PDC) today. Some of the new features include more fluid animations, Webcam, microphone and printing support, 200 percent faster start times than Silverlight 3, deep zoom and multi-touch support and more. It now also supports Google Chrome, even though it’s just a rounding error of a browser.

Some more details on Silverlight 4 features and its Chrome support.
There are also notes of some success with Silverlight 3.

Yes, it's possible, especially on poor quality Internet connections – usually wireless, but some wired connections ^{(such as the one I have)} also have high error rates at high speeds.

The HTTP protocol does not have any provisions for ensuring data integrity. On transport layer, TCP does have error detection by using a checksum, but it's not very reliable.

There is another reason for providing hashes or digital signatures. Often, the actual files are distributed over many mirror servers, which cannot be guaranteed to be 100% secure. If there's no hash or signature to verify, someone with access to a mirror (not necessarily legitimate) could replace the files and remain undetected, without having to break into a completely different server where the website is hosted.

You can get automatic verification of files if you download Ubuntu over BitTorrent instead of HTTP. (Each piece is verified at download time, so you never have to re-download the entire thing.)