Windows Vista Service Pack 1 (SP1) is not measurably faster than the original stock edition, a Florida-based developer of performance testing and network metrics software said Monday.

“Microsoft has hinted that SP1 is faster than Vista RTM,” said Craig Barth, the chief technology officer at Devil Mountain Software, referring to the release to manufacturing version of the operating system. “But we found pretty much nothing measurable. It surprised me as much as it surprised everyone else, but the numbers are the numbers.”

German police are unable to decipher the encryption used in the Internet telephone software Skype to monitor calls by suspected criminals and terrorists, Germany’s top police officer said on Thursday.

Skype allows users to make telephone calls over the Internet from their computer to other Skype users free of charge.

Law enforcement agencies and intelligence services have used wiretaps since the telephone was invented, but implementing them is much more complex in the modern telecommunications market where the providers are often foreign companies.

“The encryption with Skype telephone software … creates grave difficulties for us,” Joerg Ziercke, president of Germany’s Federal Police Office (BKA) told reporters at an annual gathering of security and law enforcement officials.

“We can’t decipher it. That’s why we’re talking about source telecommunication surveillance — that is, getting to the source before encryption or after it’s been decrypted.”