A company that measures Internet service reliability has given Microsoft the top score in a test of operating system update services.
Microsoft's Windows Update was available 100 percent of the second quarter of 2008, Pingdom said in a blog posting Friday. Apple's service was down 2 hours and 34 minutes, with 99.9 percent uptime, and Canonical's Ubuntu version of Linux was down 1 day, 5 hours, and 45 minutes, for 98.64 percent uptime.
"Microsoft wins this one hands down," Pingdom said. It noted that Ubuntu's service also is available through mirror sites, however.
The company tested the three services every five minutes.
This article was first published as a blog on CNET News.com.
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