According to Ed Bott over at ZNet the case for Windows Vista Service Pack 1 just got a lot stronger.

“When SP1 ships sometime in early 2008, it will strip away one of Vista’s most annoying features and remove one of the most persistent objections to Vista’s adoption.”

Microsoft will remove the reduced functionality mode — the so-called “kill switch” — from the operating system, “restoring the Windows Genuine Advantage (WGA) program to its original role as a series of persistent but nonlethal notifications”.

WGA senior product manager Alex Kochis talking to reporters and analysts, said, “Based on customer feedback, we will not reduce user functionality on systems determined to be non-genuine”.

With SP1 installed, a Windows Vista system that fails validation, which Microsoft terms “non genuine”, will continue to work exactly as before, except for some minor annoyances. The desktop background will be black. If you change it, a scheduled task will paint it black again one hour later, and you’ll see a small “Activate Now” alert in the same location, which apparently you can ignore.

Sounds hairy, though.